IS THIS NORMAL?! I'm 38 weeks and Really concerned

I have been nauseous/throwing up and my body hurts from my upper back all the way down to my knee caps and its hard to even walk! I have been having heavy period cramps and everything but I'm not dilated.....I have bad head aches and weakness as well as my feet getting swollen....I ask my Dr if its normal but he just says drink water.....its starting to really concern me like i have had two other children and this never happened with the other two.....I really don't feel right and I'm scared to the point I just cry and I don't know what to do to make myself feel better since I can't take medicine.