irritated :(

i had a miscarriage back in march and im pregnant again. im not sure how far along I am because my periods are real irregular. i went in today and all they did was take blood they took blood 4 days ago and They were only 211 and she said she won't give me a ultrasound until I'm 50,000. isnt that too high to wait on I'm high risk and not understanding why I can't get no ultrasound ive been getting positive test since 2 months now we should see something dammit. my nunvers are doubling just not getting real high real quick..