What is the risk of contracting HIV virus by a man if a woman's?
Obviously, to even ask this question then something similar has happened to you or someone close to you. Of which I don't need to know. The only way to really find out and the only sensible way is to go to a doctor. Get the test done. Until you find out either way, do not have unprotected sex or even better avoid all sexual intercourse. Doctors are much better than Quora for these very serious matters.