please help calm my hormonal nerves!!

[lex229]

Ok so this is a long story but please help!! So early this January I moved and started a new job and had just began a break with my boyfriend. So I started my period on Jan 26 2013 and also slept with a friend of mine that day. Days later me and my boyfriend for back together and began sleeping together again. I then again had what I assume to be a period on Feb 21 2013 but it seemed to be early ( so now I'm worried implantation bleeding)... Also it was quite heavy and had many clots ( I know eew sorry!!) Then on mar 6 2013 I took a plan b as well as started birth control. me and my boyfriend had unprotected sex that day after taking the plan b and birthcontrol as well as on mar 7. Then on mar 26 2013 I got a very positive pregnancy test. I had a u/s on April 10 2013 that said I was 6w 6d days which matches perfectly to my "period" on Feb 31 as well as putting conception on the 6 or 7 of march. Since then I have had a u/s at 17w 6d that again perfectly confirmed these dates. So my question is, is there a possibility the u/s was wrong both times and the friend from January could be the dad? Also my uterus is measuring perfectly where it should for a 18 week baby. I just feel really stressed first off because the "period" was early also I took plan b whicheans I shouldn't have ovulated...but Idk if iteans for a certain amount of time or for the whole cycle after its taken. Any help would be very appreciated!!!thanks so much :)

[Sheaby]

Plan B doesn't stop you from ovulating, and you're very lucky that it didn't kill your baby.  Having sex AFTER taking the plan B pretty much defeats the purpose - as it's meant as back up birth control within 48 hours of having unprotected sex.  Also, PPs are right, the ultrasound can't be that far off and your boyfriend is the father.

[wyrpamatz]

The ultrasound is more dependable I believe your bf is the daddy and congrats.

[ftmom2beaug28]

Its highly unlikely that an ultrasound that early is off by 4 weeks. i'd confidently say its your boyfriends baby.