On September 2022, 10th September I had unprocted sex and had the morning after pill the next day. A week later I had my full period and 2 weeks later I took a pregnancy test mutiple and said I wasn’t pregnant. On the 16th October I had my second period for 4 days shorter than normal but I thought it was due to the morning after pill maybe. October the 28th to 30th I was my most fertile and we planned to have a baby and try. Two weeks later I did a pregnancy test and it was positive. I was shocked as I conceived really fast. Then I did the clear blue and said 2-3 weeks. I had a scan on the 7th December and said I was 7 weeks and 4 days. I am now 9 weeks and 4 days. I maybe be worrying for nothing but I have a doubt in my mind my pregnancy could be from September is this possible? The lady at the scan said the CRL is 12, so can’t be any more than that. Please help and give me your opinions. Really worried.
Hi, Becci and sorry for a late reply. I haven't seen your question earlier.
Based on the information you have provided, it is highly unlikely that your current pregnancy is from September. You had a full period a week after the unprotected sex, and then took a pregnancy test two weeks later that came back negative. It is very unlikely for a pregnancy to go undetected on a pregnancy test two weeks after conception. Additionally, you had a period in October, which further suggests that you were not pregnant at that time.
The fact that your scan on 7th December showed that you were 7 weeks and 4 days pregnant also supports the idea that you conceived after the end of October. If you had conceived in September, you would be further along in your pregnancy by that time.
Based on your scan result of the crown-rump length (CRL) being 12, it indicates that you were indeed 7 weeks and 4 days pregnant at the time of the scan, and not further along than that.
In conclusion, it is highly unlikely that your current pregnancy is from September. The dates and results suggest that you conceived after the end of October, which is consistent with your planned attempts to conceive.