Hi.I had 4 protected sexual encounters in last 3 months with CSW.During the first encounter I used 2 condoms, other 3 occasions I used one condom.I did not notice any breakge or any slipage during and after the acts.I wanted to know are ther any chances of condoms faiure which may get un noticed may result in infection?Should I go for Hiv test?Please sugest.