S3x is not meant to be painful. However, S3x is very painful for some women, for a number of reasons including size of the pen!s/vag!na, health challenges and mental readiness. Pain during or after S3x, medically termed dyspareunia, can happen during or after S3x and could be felt in the vag!na or the inner pelv!c region. However, all women should know that experiencing pain during or after S3x could be the body trying to say something is wrong. The best reaction once you notice it is to see a qualified doctor. Here are the reasons for dyspareunia:
1. First time S3x – it is normal and common for a woman having S3x for the first time to feel pain because the hy-men is stretched abnormally. It can be very painful too.
2. Dryness, no lubrication – when the woman in dry in the va gina, penetration is more than likely to bring sharp pain and even tears. Using a lubricant will help.
3.Mental block – S3x could be painful when the woman is not 100% ready for it. She needs to be emotionally and physically involved for it to feel good.
4. Infections – some se-xually transmitted infections (STIs) like chlamydia, gonorrhoea and genital herpes can cause S3x to be painful
5. Menopause – when a woman reaches the menopausal age, her changing hormone levels can make her vag!na dry (atrophic vaginitis), leading to painful S3x. Lubricants will come in handy

6. Vaginismus – this is a condition where muscles in or around the va gina shut tightly and make penetration very painful or even totally impossible

http://www.naijatwist.com/2017/09/see-6-reasons-why-x-is-painful-for-some.html?m=1