I am 33 weeks pregnant and I don't know who is the father of my baby

Hi Lila,

If you had a "normal" period on May 26 it is unlikely you were pregnant then.

Your due date matches an LMP of May 26.

Odds are very good it is the "one man after" that is the father.

A DNA test can confirm but I think it not necessary.

Also, if I were pregnant by the man from may 22nd I would be farther along correct? My first ultrasound was at 13 weeks and the edd from my lmp and the ultrasound edd were 5 days apart. How accurate are theese ultrasounds at 13 weeks?

And I went to the hospital june 26th for back pain which is when I found out I was pregnant they gave me an hcg test and my hcg was 225 but also gave me an ultrasound and said they saw nothing because it was too early. If I conceived May 22 I would be farther and they would have saw something right ? Im sorry for all the questions I am just going crazy

Ultrasound dates are estimates.

You know when your LMP was.  Use that as the basis for your dates.  Nobody can tell exactly when you conceived so we estimate 40 weeks from your last period START date.

You are also EXTREMELY unlikely to get pregnant 3 days before your period starts, actually, from about 10 days prior to your period starting.  Why?  You'd normally ovulate between days 11 and 16 of your cycle.  The egg is viable for about 48 hours - so that would be up until around day 18.  The "typical" cycle averages 28 days long so that allows for about 10 days that your fertility is decreasing.  When you had sex on the 22nd you were at/near your lowest fertility.