What the hell

So I had a D&C 10 weeks ago. Took a pregnancy test and it was positive.

Very faint but obviously there. That same day I went to the doctor to express my concern at whether or not this would be a new pregnancy. They did a urine test which apparently was negative. All she said was I wasn’t pregnant and must’ve looked at the test after the allotted amount of time and sent me on my way.

So now I’m confused as fuck?? How can I find another doctor who will test my levels? Ugh