Who am I pregnant by

[mtple]

I'm 21 weeks and 5 days ACCORDING to tHe ultrasound but according to my period I'm 21 weeks and a day.. My due date is November 27th because my lmp was February 19 or 20th I had sex with my ex before that date and during my period, it was unprotected.. March 7 I had sex with a guy I was talking to he stuck it in took it out and put a condom on I'm not sure if I'm pregnant by my ex or the other guy??? HELP

[AnnieBrooke]

How regular are your cycles, does your period come every 28 days or every 30 days or something like that, or does it vary?

[mtple]

I had just turned 18 weeks when I got my ultrasound

[AnnieBrooke]

*you would have conceived *around* March 3

[AnnieBrooke]

Hi, how early in your pregnancy (in weeks) did you have the ultrasound that now gives you 21 weeks and 5 days?  When was the very last time you had sex with your ex?

By your ultrasound dates, you would have conceived in March 3 with a margin for error of +/- a certain number of days depending on how late the ultrasound was in the pregnancy.  If it was any later than week 6 or 7, you really can't use it to pinpoint a conception date that closely.  According to your last period, you would have conceived around March 6, but last periods really aren't reliable for pinpointing conception either.  Is there any chance that your ultrasound was early in your pregnancy?  It's the only thing that will help here.