What are the cances to catch hiv first time unprotected sex with a women who had multi partners. ?

Non-zero: But low. Before effective treatment, most husbands of hiv-positive wives did not become infected even if not using barrier protection. I hope you'll be careful from now on because there are lots of other reasons to use protection or wait -- but i'm also glad you found love, whatever may happen. If you're seriously worried about hiv, your physician can check you -- just ask.