Basically i spent Wednesday night at my mom's house and that night could barely sleep from how hot the house was but i remember how how my forearn muscle started to feel a little achy but not alot. Come thanksgiving day the whole right side of my forearm hurts, the muscle at least and i can squeeze it and rub the muscle so i know thats where the pain is. Come now friday it's traveled up to my bicep and inner part of where my elbow is. What on earth is this muscle pain? Im 38 weeks pregnant but i dont know if that has anything to do with it.