I had sex with a CSW, 3 days ago, i used a magnum condom which was intact until i ejaculated, because at the interval i applied lubricant was i knew it was intact till the end, after i had cum, i thrusted a few times and withdrew my penis from her vagina. It was at that point i noticed there was no condom on my penis, it was in her vagina with a part of the condom outside of her vagina, i now simply drew it out, the condom wasnt broken and my semen was inside the condom. i immediately washed up and now i am scared that i might have been exposed to HIV. Please what are the chances ?