Just need to put my mind at ease

I had a miscarriage at the end of Feb, my d&c end of April. I took 3 tests over the weekend all positive😃 but had an appt yesterday for internal ultrasound to check on a cyst on my ovary. They didn't do a pregnancy test (i told them i took a test) which I thought was kinda crazy because it was the Dr I was going to use for my previous pregnancy. The did the ultrasound and couldn't see anything in my uterus. Am I being paranoid from before or is it because I'm not far enough along yet?