Is painful sex normal?

No. It is not normal to have painful sex. Painless sex is the norm. One's primary care doctor can evaluate the pain symptoms. The doctor will examine the patient and want to know where the pain is, how it starts, how it ends, what makes it worse, and what makes it better. One will want to describe exact what movements and activities are going on that lead to pain.

No. There could be many reasons why. No lubrication used, a penis that is abnormally large with a small vaginal opening and stress and anxiety from previous encounters. Best see your OBGYN doctor.