Confused about my pregnancy scan dates

[Ch1o33x]

So I’m just abit confused I know they add on 2 weeks on to pregnancy scans but I just want some reassurance, I went for my 12 week scan on the 24th of June they said I was 12 week m 4 days but I was on my period then I actually conceived I think of the 8th or 9th April as I had my period from the 25th to the 30th march it could’ve been 4 days to be fair but yeah I had slept with someone 5 or 6 days before my period n then yeah I had my period and then I use Flo app and that said my highest chance on conceiving was on the 8th or 9th that following month yeah n I slept with my on n off boyfriend on them dates but the guy I slept with the 5/4 days before my period wasn’t him was a stupid one night stand but yeah I guess I’m just worrying but yeah I’d just like a second opinion as it’s making me not enjoy my pregnancy because I’m worried whay if it’s the other guy but yeah it just confuses me x my periods have become shorter but heavier for some reason but yeah I did a period after that guy I’m very much an over thinker and my on n off boyfriend is the love of my life but not very nice idk just scared but everything points to him like the highest chance n how on my cycle 14 is highest chance n that was on the 9th when I could’ve conceived from him but yeah I’m just an over thinker n I kind of want some reassurance xx

Pregnancy is dated from your last period, not from conception, so if you were 12+4 on 24th June, that means you started your last period around 28th March (consistent with your dates) and conceived around 11th April (also consistent with your dates). The couple of days difference between 8/9th and 11th April isn’t a worry - it’s accounted for by variations in when you ovulated and how early/late the embryo implanted. If you had sex with the other guy around 20th March then there’s no chance the baby is his, so you can stop worrying!

BUT your post did worry me. You say “my on n off boyfriend is the love of my life but not very nice” - what do you mean he’s not very nice? Is he abusive (I don’t just mean physically - abuse can take many other forms)? Does he know about the baby? You don’t have to stay with someone who is horrible to you. I’d urge you to talk to your midwife about your relationship - domestic abuse can often worsen during pregnancy when women are more vulnerable.

Also you may want to ask MN to move your post to the Pregnancy topic for more responses.

Thank you so much yeah it was just confusing I’m only 20 yeah I panick because I know it’s his but he can say if it’s not mine I’ll ruin your life but there’s a past history of how he’s been with me he knows about the baby and wants to be there when it’s here just don’t want to help me through the pregnancy and can tend to try play mind games but I have told my midwife as I want to enjoy my pregnancy and not worry about stupid things I have a social worker also helping along with my pregnancy to make sure everything will be okay and the way we’d work with the baby will be okay but thank you so much for your response. X