To answer the OP question. Simply keep an eye on your itinerary at aa.com. If it changes, it will be reflected there. I am wondering if by AA you mean Airtran Airways. They move their flights quite often and that has been discussed at length here on the DIS. If it is them, keep an eye on airtran.com in the "my itineraries" section. All airlines will keep the itinerary area up to date with any changes.
I personally have not had one move with my AA (American Airlines) flights. They were purchased Nov. 30 for flights in June and there has been no movement at all. My Airtran flights, on the other hand, moved all over the place. Delta has changed flight times or better yet, flight numbers meaning all seat assignments are lost until you call back. Sun Country has moved our flight.... every airline will move flights to fit best in their schedule to make money.... SW is one of the few that set a schedule and stick to it.... unless there is mechanical or weather related issues.
Duds