False positive?

Jaclyn

So took a test last week and it came back positive. Yesterday had some light brown spotting. This morning it was a little more and turning red. Got in tough with my dr office due to previous miscarriages. Went in did bloodwork, us, and urine test. Their urine test came back negative and the us tech didn't see any signs of pregnancy in my uterus. Now we are waiting on the bloodwork to come back and see what that says. I've not passed any large clots as of yet like I did in the past. I'm just so confused as to what is happening now 😕