Just dont feel right!

Almost 37 weeks, and intense fatigue hit me a few hours ago. I laid down for a bit and then got up to prepare dinner. I am having the most uncomfortable cramps I cant even stand up for long and my appetite is gone. I almost feel sick to my stomach but no nausea. I am trying to eat .. but its really hard. I dont have a fever or anything. The cramps wont stop and they seem to get worse here and there. Could I be going into labour already !? I just dont feel right. My entire body is just done out of nowhere !!