There are other medical things for women - especially if they are pregnant. Go to a doctor and ask.
I hear that most OBs don't want to see anyone until they are between 8-12 weeks anyways. Unless you have a major problem, of course. I know its hell waiting, but I had to wait until 8 1/2 weeks with good insurance and only because I am 38 & was unsure of my date of conception! The only thing I was able to do before then was check my HCg levels at my family doctors office. Good luck, and be patient!
Some obs may accept "pending" medicaid.
You can always pay out of pocket for a visit to a clinic.