So I unexpectedly fell pregnant with number 3, but know for sure the date of conception was 7 March, even though my cycles can be irregular. All the online calculators I used said I am 7 weeks now. Based on a LMP of 18 February with an average cycle length of 31 days.
At my dating scan yesterday however, bub was measuring 5w5d. Heart beat was 111 bpm. So it would appear everything is well except I can't explain that dating. I definitely would have conceived either on 7 March or a couple of days later if I ovulated after we DTD. Didn't think sperm would survive too much longer than that!!
So I'm thinking there might be a problem with the growing embryo if it's measuring over a week smaller than it should be. Probably going back in a couple of weeks for a repeat scan.
Thoughts and experiences please?