recently my fiance has wanted to have anal sex. On the occassions that we have done it, afterwards he has put his penis back in my vagina. I have heard that this can cause infections in the vagina and i was wanting to know what kind of infections, and whether i should go and get tested? Can they cause infertility? Would i have symptoms if i did have an infection?
You can get an ecoli infection. It's caused by feces and other bacteria found in the rectum entering your vagina and urinary tracked. It can be very painful and dangerous, even life threatening if not treated. You should never go from your rectum to vagina during sex.
If you got an infection from it, you'd know it. And while it's not exactly a great idea, it's certainly not gonna kill you. If you have no symptoms, don't worry about it. In the future, make sure he either washes in between, or uses a condom (and switches to a new condom for vaginal) as someone else suggested.
Never ever go back and forth!!!! In fact, don't have anal sex without using a condom. I doubt you'd get an infection that would cause infertility, but anal yeast infections, vaginal yeast infections, and BV infections alone should be reason enough not to be back and forth. If you had an infection, yes you would probably have symptoms. Your doctor will probably tell you to come back only if you notice unusual discharge, burning or itching, or an odour.
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