I am 17 , i have an uncircumcised penis, and I'm planning to have sex. Its my first time . How long would the pain lasts after sex ? Would i be able to have sex the night after ?
Who's pain? Your or your partner?
There should be no pain for you if you can slide your foreskin. If it is tight, of you have a short frenulum you may be sore.
Your partner might be sore but if you are gentle, take your time, and use a lot of lube, she should be OK.
Just go easy, lots of foreplay, and use some protection.