I am 15 weeks pregnant and i was laying in bed last night and I started to feel very sick. I could feel my heart beating extremely fast. I stay down to regain myself, only I couldn't. I was getting a severe headache and I my hands were trembling. This last for an hour or so. During this time, I had vomit-like feeling. I checked my blood sugar to see if it was too high or to low since i have had gestational diabetes my last two pregnancies and it was really great. I am not sure what it can be. i drank a very big glass of water and tried to relax.... it just didn't go away for quite a while. Then this afternoon , i felt better and al of the sudden , it came on once again..... i feel the nausea and yuckiness alllllllll day and now this to add???? what is wrong with me????