Mine looked different both times.
2nd cycle was day 6 so pretty fully hatched and kind of looked like a figure 8. This was my bio chemical pregnancy.
3rd cycle was a day 5 and he looked more like a roundish thing but with lots of cells hanging out the side from the testing.
The only problem I had with my embies being hatched was I had one healthy male embie which was fully hatched, he had latched on to the glass peitry dish and when they tried to get it off for storage he got stuck in the pipet and was 'killed'.

I'm glad you feel better today. I had long breaks between cycles but to be honest if dh and I coped better as a couple I'd have done back to backs. It just didn't suit our marriage, we ease into things.