Really need to know

Need to know asap

Due dates vary a lot, but if you can't see a pretty big bulge, then it would not go all the way back to July - most likely. There are exceptions to that too.
Pregnancies usually run in the mid to high thirty weeks. 7/27 to 2/29 is about 31 weeks but it's pointless to even do a calculation. The doctor goes by what she says her last period was, and partly by ultrasound. First babies can take a little longer sometimes. You don't know if she had sex with anyone else around that time, not for sure. The only way to know if you are the father is a DNA test.

Mid May...

Mid may maybe later... but within the month of May defiantly

Approx March 17 by the June date, or April 18, by the July date. So, she would have had the baby by now.

Let us know when she delivers...