If you feel pain while peeing for first time after intercourse. It’s a quite common problem and mostly happen because of rough sex. Because of friction upper layer of skin might damage and because of this you feel pain and burning sensation while urinating.
The best solution possible for this is to use lubricant while doing sex. But if you are getting same problem again even after using lubricant, please check with your health care provider.
Lastly, vaginal pain and pain or burning on urination may also result from a vaginal infection, which normally also involves a smelly discharge from the vagina and pain or itching. Vaginal infections are sometimes be caused by STDs (sexually transmitted diseases).