I'm so scared and I need some help

So today I finally had my appointment to check and see what was going on with my uterus lol now I had an ultrasound done by the same person and my doctor is confusing me because she says I am pregnant but tech says she doesnt see anything after the first scan. I'm so lost and confused pictures below. Supposed to be 6 weeks and 3 days baby has a hb of 113 bpm with a due date if 4/13/20. I normally can tell where my endometrial line is but I cant see that on the bottom two at all. I cant see any of my anatomy. Someone please help I just want to cry.