Bret Michaels -- I'll Be Singing Soon

Bret Michaels says he has "no doubt" he'll be able to return to the stage by next month ... this according to a source communicating with the singer.

We're told Michaels -- who suffered a brain hemorrhage last week -- is now speaking well and plans to hit the stage on May 26.

Our source says Michaels says he's excited about getting back to performing, which he says keeps him "sane."