First ultrasound

Thought I was 8 weeks (using date of LMP) but even if it wasnt from then, at least 6 weeks. Had our ultrasound today, apparently I'm only 4-5 weeks 😭 they couldn't even see babe on the tummy ultrasound so had to do a vaginal one. Also have 3 cysts on my left ovary. Now I'm stressing like crazy!! I just want to be at the 8 week mark so I can see a healthy baby. They saw the yolk sack, so that's good I guess? I don't think I'll have another ultrasound until the middle of November 😔