I am 23 weeks pregnant according to my ultrasound I am due December 3rd but I have some small concern of who the father of my child is. According to all the online calculators I conceived somewhere between March 7-16 and I had intercourse on March 14. I had intercourse with another guy sometime before February 7 not sure the exact date but the first Day of my LMP was Feb 26 . I am certain it is the guy I had intercourse with on march 14 but I just need a little more assurance before the baby gets here

You will need a DNA test from the father and baby to determine for sure.

Calculating conception dates is an inexact science. However if you got your period after the February encounter, then its highly unlikely that partner is the father.

If you had a period after the February encounter, then he's not the father. Once you're pregnant your period stops.

There's over a month between encounters. If the ultrasound is accurate (they're just a best guess), then it should be the second guy, the one in March.

We can only guess. If you're still concerned and want to know for sure 100%, you'll need a DNA test after the baby is born.

If you had become pregnant early February, you would be around 28-29 weeks pregnant at this point, and due around the end of October.

If your pregnancy has been dated from an early ultrasound, then baby would be from the second guy. Ultrasounds can be off a bit farther into pregnancy, but they won't be that far off in early pregnancy.

I am 24 weeks pregnant. I had intercourse in January with 2 guys one at the beginning of the month and one at the end. I missed my period for February but I had one on March 5 which was my last menstrual period . I conceived somewhere between March 10-19 I had intercourse on March 14 with the same guy I had intercourse with at the end of January. Is he the possible father of my child?

You already asked this and got answers for it. Asking again won't change what the answers will be.

Basically, you were told that if you had a period in early March, then it's likely you got pregnant in March based on everything else you have said. So chances are good that it is the guy from March.