Baby is 24 days old, has been home for 19 days, and I'm officially 5 weeks and 3 days pregnant (IVF pregnancies are dated from two weeks before egg collection). I had my third beta hCG blood test this morning and my hCG level was 456. It's up since the second blood test on day 20 (when it was 138) although still very low for day 24. As my hCG level is low for a single embryo it looks most likely that one of our embryos didn't make it, but I'm very happy that one little fighter is still growing. I've an ultrasound scan booked for next Friday. Please keep growing baby.