
Marie Osmond made a beeline for the ER last night after her Vegas show -- and was diagnosed with a bad case of bronchitis ... TMZ has learned.
Osmond's rep Alan Nierob tells TMZ ... Marie has a "bad lung problem" and was released from the hospital after a couple of hours. She is currently seeing doctors.
It's unclear whether her condition will affect her Las Vegas show, but a box office rep at the Flamingo -- where Marie performs -- tells us, Marie is still scheduled to appear tonight.
Marie Osmond is taking another trip down the aisle -- RIGHT NOW -- and the lucky groom is her FIRST husband ... TMZ has learned.

TMZ has confirmed that Marie Osmond is currently at the Latter Day Saints Temple in Las Vegas, Nevada to re-wed her first husband,
Stephen Craig.
The couple was first married in 1982 ... but Marie filed for divorce in 1985, citing "mental cruelty."

The Morman Church put Craig on disciplinary probation after the two split. In her divorce petition, Osmond requested $1-per-year in alimony payments.
Osmond married another man in 1986 ... but they divorced in 2007.
Third time's the charm?
Marie Osmond's son had been suffering from depression due to "bad school grades and a recent visit from a former girlfriend," this according to witness statements in the
L.A. County Coroner's report on
Michael Bryan's suicide.
Ruthann Clawson -- a close friend of Michael's -- said the young man also confided in her that he had
three previous suicide attempts by hanging.
Clawson said Michael smoked cigarettes daily and was a social drinker, but had not recently used illegal drugs.
Clawson also told Coroner's investigators, on the night of Michael's death, she received several text messages from him, including one where he said he was "feeling like s**t."
At 9:23 PM the day Michael died, he texted her, "I have a letter for you on my bed." She ran downstairs into his bedroom and found a handwritten suicide note. She went to the balcony, looked down and saw Michael lying on the sidewalk below.

We just got advanced word on the autopsy findings for
Maria Osmond's son, which show the cause of death was solely from the jump --
a suicide.
The cause of death was determined to be "multiple blunt trauma."
As for how
Michael Bryan died, the Coroner determined, "Jumped from height."
According to the L.A. County Coroner's Office, drugs were not found in Bryan's system.
Bryan died on February 26 after he jumped from his apartment building in downtown Los Angeles.
Story Developing...
Marie Osmond's late son,
Michael Bryan, told his roommates that he believed a former girlfriend had drugged him to the point he blacked out three days before he jumped to his death ... sources tell TMZ.
We're told Michael's roommates told law enforcement they planned on going out with Michael three nights before he died ... but he told them he couldn't go because he had made plans.
Sources say Michael didn't come back to the apartment that night. When he finally returned home he told his roommates an ex-girlfriend had contacted him, saying she was in town. Michael told his roommates he had blacked out and eventually awakened, only to find himself laying in a street several blocks from his apartment. Michael told his roommates he believed the ex-girlfriend had drugged him.
The roommates told law enforcement Michael had been sick for the next two days ... up to the time he died.
We're told law enforcement contacted the ex-girlfriend, who says she wasn't even in town the night Michael claimed she drugged him.
The L.A. County Coroner's Office is awaiting toxicology reports to determine if drugs were in Michael's system when he died.
Marie Osmond was seen leaving church near her home in Nevada on Sunday.

Last week, Marie returned to her Vegas show one day after her son Michael's funeral.
Marie Osmond returned to the stage the day after the funeral of her son,
Michael Bryan, and dedicated her Vegas show to him.

At the beginning of last night's emotional show, Marie addressed the crowd by saying "The way Osmonds survive is we keep singing and that's what we want to do tonight ... I know my son would want that. He was full of love and laughter and this show is for him."
Marie held it together -- but struggled with her last line of the show after Donny sang "May God keep you in his tender care."
TMZ has obtained the 911 call made after
Marie Osmond's son Michael committed suicide.

The caller tells the dispatcher she saw someone "flying from the roof" of an apartment building in L.A.
Before jumping, 18-year-old
Michael Bryan left a note for a woman saying she was his only friend in L.A. and that he was very unhappy.
Bryan was laid to rest yesterday at the East Lawn Memorial Hills Cemetery in Provo, Utah.
Donny and
Marie Osmond will reportedly resume their Las Vegas show next Tuesday -- the day after the funeral for Marie's son,
Michael Blosil.

According to the
Las Vegas Sun, Marie is eager to get back on stage -- with her Vegas manager saying she finds the process "cathartic."
The duo will also perform from April 13-17th to make up for the six shows they canceled after Michael's suicide.

The autopsy of
Marie Osmond's son,
Michael Blosil, is complete, but the cause of death is "deferred" -- we're told pending toxicology results.
Law enforcement sources tell TMZ they believe the 18-year-old committed suicide, and left a note behind in his apartment unit.
We're told the L.A. County Coroner has completed the autopsy but has listed the cause of death as "deferred" -- meaning they will not say definitively until the various toxicological reports are in ... which will take weeks.
The Coroner wants to know if drugs or alcohol contributed to Michael's death. Michael was in rehab in 2007.
Marie Osmond's son, Michael, left a
suicide note for a woman who lived in his apartment building, and shortly after she retrieved it she heard the ominous sirens below .. law enforcement sources tell TMZ.
We're told
Michael Blosil was supposed to hang out with the woman Friday night, but left her a text just before 9 PM, telling her he had left a note for her in his apartment.
The woman went to Michael's apartment and his roommates let her in. Sources say the group found the note, which said, among other things the woman was his only good friend in L.A. and he was very unhappy.
The note also mentioned things he would be doing for the very last time. It did not mention
suicide, but law enforcement sources tell us it was clear ... that is exactly what it was.
The roommates, who up until that point knew nothing was wrong, and the woman became alarmed, but very shortly thereafter they heard sirens and saw emergency vehicles on the street and figured out what happened.
We're told ... from the time the woman got Michael's text to the time they heard sirens ... it was a very short time span.