Hi
I had my daughter on 26 April 2013
I had sex on 7 July 2012 with man and 2 August wit man B
My period is not regular
Is there chance baby to be from 7 July sex

If there is a doubt concerning paternity then a DNA test is the ONLY way to establish positive proof.

I agree with Curlyben, in order for you to determine who the father is you should get a DNA test, it's too difficult to tell without a DNA test considering the chances of conception with both your partners are close together. Get a DNA test.

Since the child is already born, it is easy to merely get a DNA test. That will clear up any issues