ER or?

I've been sick all day. Having a migraine, nausea. I threw up this afternoon then had some soup. I felt better but then it hit me again but worse. I tried to take a nap but my migraine was so bad I couldn't fall asleep. Finally I did, but woke up and feel really weak, a little shakey, and have the chills. And felt nausea again. I ended up throwing up again. I feel a little better. But my head still hurts I still feel prettt weak. I'm soaking my feet in warm water, with ice on my neck, drinking water and ginger ale, and about to eat some bread. Should I just wait and see how things go for a little bit and go to the ER if I need to, or should I just go now. Also I just got approved for Medicaid yesterday so would they pay for my ER bills? I just lost my job today, so I can't afford a 2,000 bill if I go. I'm 25 weeks pregnant.