I had sex with my gf. She has been with more than one guys before and I have not ever asked if she has got tested ever or not. Last night while we were having sex, and while we were changing position the condom got stuck in her vagina, so I pulled it out put back on again but then I realised that I have put on the reverse side of it, that means all the side which had all the vaginal fluid stuck on it came in contact with my head and shaft for about 2 mins.
When we realised that it then we stopped immediately and I washed my penis completely with water. What are my chances to get contracted my any sexually transmitted disease?