ladies I need some advice!!

I'm going to be 35 weeks this coming Wednesday and I've been having Braxton hicks contractions ALOT. they use to be alright and I could handle them but here lately I've had them so strong I'd almost collapse to the ground. is this normal or is this a sign of almost baby time?? I go to talk to my baby doctor this coming Tuesday, but I'm kinda nervous and would like to hear your guys opinions on this...