Hate my doctor

I'm 18, and pregnant with my first baby. My doctor wouldn't do an eight week ultrasound, and even tho I BEGGED to hear the baby's heart beat she consistently refused :(

Not only did I find this very rude, but whenever I ask questions, she doesn't give me any answers. I don't understand how she can be a doctor. She doesn't seem to know anything.

She won't even inform me of how far along I am. Today she literally told me " you're somewhere between eight and ten weeks" I don't have an estimated due date because I have never had regular periods so it's hard to tell.

I had one ultrasound early on when I found out, but only saw a sac.

Now she is making me wait four more weeks before I can even see my little baby.. I'm worried because this is my first baby, and she won't inform me of anything nor answer my questions.

I'm trying really hard to switch doctors but I am having problems with my insurance.