With a combined age of 42 ...
Jamie Lynn Spears and her baby daddy
Casey Aldridge took their 2-year-old daughter
Maddie to Universal Studios in L.A. Saturday ... just days after the couple announced their reconciliation.

As we previously reported, 19-year-old Jamie Lynn and 21-year-old Casey had broken off their engagement last year ... after moving back to Mississippi.
But now, it appears the couple is working things out -- and they're even traveling together.
Yo, Levi and Bristol -- you guys paying attention?!
Unwed teen mother
Jamie Lynn Spears, her cigarette-smoking baby daddy
Casey Aldridge and their daughter
Maddie Briann went out for pizza in McComb, MS yesterday.

Parenthood can be a real drag sometimes.

We've learned
Casey Aldridge was charged with careless operation of a motor vehicle (a misdemeanor) after this morning's crash -- and no other car was involved.
Cops tell TMZ Casey was driving on the LA 606, which is in the Tensas Parish in Louisiana, when he lost control of his F-250 at around 1:30 AM. Law enforcement sources say Casey was initially taken to the Riverland Medical Facility in Ferriday, LA -- which is right across the border from Mississippi.
19-year-old Casey is currently at the University of Mississippi Medical Center in Jackson, MS.
UPDATE: Cops tell us there were three other passengers in the truck with Casey -- but Casey's injuries were the most serious.
Story Developing...

Sources tell TMZ
Jamie Lynn Spears' baby daddy,
Casey Aldridge, is currently in stable condition at the University of Mississippi Medical Center in Mississippi.
We're told he was initially taken to the emergency room, but has just been transferred to another part of the hospital.
Sources say Casey was involved in some sort of car accident last night.
Story developing...
Jamie Lynn Spears' 19-year-old baby daddy, Casey Aldridge, is mowing Mississippi one patch of lawn at a time.
Unwed teen father Casey Aldridge continued living life in the fast food lane this weekend -- when he hit up a Burger King after dropping Jamie Lynn off for a checkup.
Jamie Lynn Spears may not need a conservatorship (yet), but the new mom still wants her parents to help with her baby.

TMZ spies tell us ever since the unwed teen mother gave birth last week, she's been staying at mom Lynne's Kentwood home -- which Britney paid for -- called Serenity. We're told even though JL and baby daddy Casey Aldridge bought a home in nearby Liberty, Miss., Jamie has decided to stay with Mama Spears because she's realized it ain't so easy raising a child ... especially, when you're still one yourself.
As far as Casey's living arrangements, we're told he goes back and forth between staying with Jamie Lynn and little Maddie Briann, and his folks' home. An adult mother's work is never done.
See Also
Jamie Lynn just popped a baby out of her Britney, but little Maddie Briann may not be the only new addition to the fam.
Before birthing her baby, Ms. Spears and her babydaddy test drove a shiny new pick-up truck at a dealership in McComb, Mississippi. Hopefully, unlike her big sis, Jamie Lynn will get her kid a car seat.

A celeb photog who's been snapping Jamie Lynn Spears and her baby daddy Casey Aldridge down South has gotten popped for stalking -- even though if this happened in LA or NYC, he'd just be one of the pap pack.
Edwin Merino was arrested yesterday on charges of stalking J-L and Casey in Liberty, Mississippi. He says he was at least a couple hundred feet away when he was shooting them, but cops still nabbed him at the gas station where he was shooting.
He posted bond and is skedded to appear in court next week.
Jamie Lynn Spears and the biological father of her unborn child, Casey Aldridge, spent Memorial Day just like all other famous, unmarried, expectant teen lovers -- at Wal-Mart.

The pregnant babies shopped for vittles and other discounted items at a local Mississippi branch of the super chain.
The only thing as important to Casey Aldridge as Jamie Lynn and their unborn bastard child is his prized UTV.
Hope that thing can hold a car seat.