Ok I had sex with a guy back in 10/31/10 and another one in nov 6,2010 and had my son aug 9th 2011 which one do u think would be my son dad? The October guy or November guy?

No one can or even should be trying to guess. The odds are 50/50.

No one can or even should be trying to guess. The odds are 50/50.
When.I added up from October. It came up to being July and the other one in August

The days are too close together so there is no guarantee who the father is, no matter how much adding is done. The only sure way to know is with a DNA test.

As a nurse in obstetrics, I can tell you without a doubt that the dates of your encounters are too close to call. Gestational dating is a best guess estimate that can range two weeks either way. Since both of your encounters were within one week you will have to have a DNA test to determine paternity.

No way to add them up to get any date that would be different, they are too close and either could be. You should have had a DNA test done when child was born. You will need to now, to know