HELP!!!

am at 31 weeks pregnant and been having issues walking far distances, and been having Diarrhea for the past 2 days or just having to go #2 after each meal..after having trouble going during the 2nd trimester.. I am having my first baby and i am due may 10th so it couldnt be sign of early labor right? Wanted to ask here first to see if it has happened to anyone else...