If a mother had a baby in february full term but had unprotected sex with the man in july what's the possibility that he could be the father?

We need the due date: If you can tell us what your due date was or what your last period was before you got pregnancy we can calculate the conception date. A full term baby in feb is too open ended for calculation. If your due date was feb 28th for example the conception would be in june. Repost with the due date originally given by your doctor.