Complicated situation

[avanahh]

Hi!

I am a bit worried about my ultrasound dates as I had my 12 weeks yesterday and they dated me 13 weeks.
The thing is I got back with my boyfriend around 12 weeks ago and this was when I was meant to be ovulating. We had unprotected sex every day for almost 2 weeks at a high fertility time – he was visiting from America (basically we broke up as it appeared he was going to take a job in the us but then after he visited he decide to move back to the UK which I am very happy about).

So he and I are happy to find out that I am pregnant but now they are saying it is 1 cm bigger than it should be at 12 weeks.

The problem was I slept with a friend that has liked me for some time about 2 weeks before I slept with my boyfriend (very stupid) but he and I used a condom, it only happened once and then I had my period 5 days after sleeping with him for 3 days (which is normal time for me to have my period). It was also low fertility days when I slept with my friend.

So I cant imagine there is a chance it is my friends (as low fertility, used protection, had my period after) and sure worrying about nothing, but the extra week that they dated me at had me confused and worried.

Also based on the last period date for when they calculate the pregnancy (gestational) it adds on 2 weeks so I think it is alright as if you take off 2 weeks it takes it right to the time I was with my boyfriend.

Additionally on the day I think I ovulated after being with my boyfriend, about 3 days after I was dizzy and went home from work – I think I conceived this day. Then about 6 days later I felt light picking, poking feeling in abdomen, and then a dull pain for maybe 3 days on and off which I assumed was implantation.

Anyway any advice would be great as confused and a bit worried!

thanks

[AnnieBrooke]

Sounds like if the doctors say the baby is due January 15, you got pregnant around April 24, give or take 7 days since you didn't get the ultrasound until your 12th week.  Even if it had been April 17, that still doesn't stretch back to the time when you and your friend used protection and all.  It just doesn't sound like there is a chance it came from the April 4 incident.  The docs would have told you that you were at 15 weeks, not 12, if so.

[avanahh]

I slept with my friend once on the 4th april and used protection
Then 6 days later I got my period for 3 days
My boyfriend visited the 14th April and stayed with me 2 weeks, we were together regularly and didn´t use protection - this was when I was ovulating according to my app, general ovulation times eg mid cycle
I then didn´t get my next period and realised I was pregnant
Doctors say 15 January the baby is due
At 12 weeks scan, this week, just the past Tuesday they said it was 1cm bigger based on LMP which was 10th april

Hope this is clear! thanks

[AnnieBrooke]

Hi, earlier you said (about the friend) "after sleeping with him for 3 days."  What did that mean?

Also, you say just above, "Boyfriend came to UK 14th april - says ovulated within 15th to 24th I think."  What or who says ovulated?  If it was just an app, that is not useful, if a doctor said you ovulated in a certain time frame, that would be more useful.

And what estimated due date did they give you on July 12?  Not "1 cm bigger," what date did they suggest the baby is due?

[avanahh]

Ok thanks so:

Slept with friend once 4th april - used a condom
Last period 10th april
Boyfriend came to UK 14th april - says ovulated within 15th to 24th I think. We were together for 2 weeks - didn´t use protection
Did 12 week ultrasound 12th July - said was 1cm bigger so measured 6.8cm but also said is ok to be within 2 cm

Writing it like this makes it clearer to me I don´t think it is possible to be my friends. I guess I was being paranoid when they said it was 1cm bigger.

Anyway again if anyone is super knowledgeable about this and can provide any advice it would provide peace of mind. It´s not something that is usual for me it´s just my boyfriend and I were a bit unsteady as he was thinking about taking a job in another coutnry, but now has moved back to UK.

Thanks

[AnnieBrooke]

They don't date the "weeks pregnant" from assumed conception but from assumed first day of last period.

Rather than saying "almost 2 weeks" and "about two weeks before" and such, could you use dates?  Like:

Slept with friend -- April 2, 3, 4
Period -- April 7
Slept with boyfriend -- April 21 - 30
Estimated due date from ultrasound --  January 12

or similar?  Could you also say how many weeks (GA) you were when you had your first ultrasound?