Sex can last a period of time depending on the two sex mate
Vaginal friction is not an infection. But to answer your question it usually last about a week to a week and a half. It depends on how many lacerations you vagina has after rough sex. As long as you don't continue having sex, and allow time for your body to heal, they will only be there for a week, week and a half tops! :D
about a week..... if you last that long
If you are looking to have rough sex, start with foreplay to get each other going. You can initiate the rough sex by going in and out really hard and really fast.
rough sex is good, but smooth sex is better so it cannot hurt anybody!
it last from 10 min to 15 min
== == If its what you want, it is okay. As long as it doesnt hurt anybody even yourself!
2 or 4 min
No it can not. The only reason a woman's period would be delayed after rough sex, is that she became pregnant.
Some women (not all) like rough sex. It really depends on the person, each woman is different.
till u sex til they break
What I heard is that the span of sex in America for people over 30 is 15 to 20 minute's.