I just found out last night that I'm pregnant. I was on the depo shot for a long time so I don't even know how far along…

I just found out last night that I'm pregnant. I was on the depo shot for a long time so I don't even know how far along I am. I recently also found out that I don't have health insurance. I am 22 years old and my bf is 23. we both recently graduated from college and are searching for "big boy/big girl" jobs. For the mean time, I am a bartender. With just finding out I am pregnant, I have been drinking prior to that which makes me scared. Also, we live in his parents basement. I'm just looking for advice on what to do, or similar stories. I have an appointment tomorrow at 1:30pm for tests and an ultrasound.