Question about baby growth and m/c
Quick info I have 4 boys and 5 m/cs all scattered out in between my 4 boys, my story- I know my dates, I do bbt, cm and cp charting, I am pretty sure when I had unprotected sex and when I ovulated, I go for u/s which should be 8 wks by lmp, baby measures 6wks 1 day, hb 100, go back one week later with u/s tech specializes in high risk pregnancies and says I measure 6wks 3 days and have an oblong sac(should be round, oblong just increases m/c and can straighten out later) hb still 100, my question is if baby isn't growing right then how long will the hb last? Dr says I have a very high chance of losing this one too, I just confused that if the baby is actually 2 weeks behind then how is the hb still holding on? And what if dates are right and I really 6wks 3 days but a 2 day growth in one week is still bad and the hb never increased, how long will the heart beat after the baby stops growing? I go back in a week for another u/s I will know for sure then but can't help but try to figure it out until then yk?