Confused

[Mermaid1234]

Hi, my last period was around December 12 I had sex with my boyfriend from December 23- Jan 4 or 5th. We got into a argument and I went out and had sex with someone else January 6 at like 12 or 1 am so January 7th I was on top when he ejected I went to the  toilet  And then showered. I found out I was pregnant January 27. My doctor gave my a ultrasound and dated my edd to 09/18/17 when I got my official ultrasound I was 9 weeks 6 days with a edd of 9/27/18 with the conception date of January 4th I just want to know should I be worried or not cause I am stressing.

[AnnieBrooke]

Here are the things that matter from the point of view of medical evidence and trying to figure out if the later guy has a chance to be the dad.

- You said you had an early ultrasound. It said ______ (What did it say? When was it? What due date did it give you? It sounds like it was earlier than the ninth week. However, if it was in your fifth week or earlier, it won't give you enough information to get a due date. What did the doctor actually see in your earliest ultrasound?)
-  You had an ultrasound (the one you say is either 9w6d or 10w6d) before your 12th week. It was on February 27. It gave you a due date of September 20.
- An ultrasound in your late ninth week has a margin for error (when someone tries to use it to compute when conception was) of +/- 3-4 days. An ultrasound in your late tenth week has a margin for error of +/- 4-5 days.

Here are the things that don't matter.

- You were on top when you had sex. (Sperm has no trouble "swimming uphill.")
- You went to the loo after the sex. (Semen is not in your urinary tract, and the sperm leave it behind and rush up your cervix immediately anyway. Neither urine flow nor the contractions of urinating can reach up there and push the sperm out.)
- You took a shower. (The sperm didn't even hear the rushing of the waters.)

So -- what does it mean when you say an ultrasound was your "official" ultrasound? And what do you mean by the lady saying 9w6d and the computer saying 10w6d? (If I wanted the first guy to be the dad, I'd like the computer more than the lady.) From what source did you get the due date of September 20? In your original recounting, there were two dates, September 18 and September 27.

[AnnieBrooke]

When was the first ultrasound, that told you 9/18 was the estimated due date? Or did the doctor just tell you 9/18 without referring to the ultrasound results? Because January 27 would be pretty early for the doctor to see much on an ultrasound, let alone enough to date the pregnancy.

[Mermaid1234]

Sorry I was just overthinking they had they weeks wrong on my official ultrasound which was 2/27 the lady told me 9wks 6dys and the computer has it as 10wks 6days the correct due date is the 9/20 which adds up to my cycle