Hi OP
I'm so sorry for your loss, it's so heartbreaking, and I totally understand your feelings.
I have a similar experience/timeline with you, my last period was 22 Jan 2025, I went in for a 6 week scan, didn't see anything apart from the sac, and then an 8 week scan - still nothing. I was shocked seeing the empty sac on the screen and felt like a fraud too -- I was experiencing morning sickness as well when the sac grew, however, there was nothing in it. I also had a bad flu in February.
I opted in for medical management, I passed the sac quite quickly. I stopped bleeding/spotting blood after 2 weeks, and now waiting for the positive pregnancy test to go negative.
Also disappointed that no one (midwife/GP/nurse/Doctor in EPU) could give me some constructive suggestions on why this is happening, and how we can do it differently next time, or some basic tests we can do. I'm 36 and it was our first baby trial, just feel we are racing against time.
It takes time to get over this feeling and just want to let you know you are not alone, Wish us the best of luck for the next time.