it was not like that before. when he's trying to go inside me it hurts and after the intercourse. but while doing it - its not that painful but uncomfortable.
It's possible that a recent encounter was a little too rough for you and the delicate skin is trying to heal.
You should abstain from sex while it heals, if it persists then see your health care physician or gynecologist.
I would suggest going to a doctor and asking why.. or are you pregnant?