First sexual activity. Unsurprisingly, women often deal with pain when they first become sexually active. This problem usually takes care of itself with time, but lubricants can help as you grow accustomed to sex.
Infections. Common conditions like yeast infections, bacterial vaginosis and sexually transmitted infections can contribute to painful intercourse.
Endometriosis. This painful condition causes scar tissue to grow inside the body, and patients often feel deep pain when their cervix is bumped into scar tissue during sex.
Vaginal dryness. Hormones are often to blame if you suddenly experience vaginal dryness. It’s pretty common for post-menopausal women and women who have just given birth to deal with uncomfortable dryness. Thankfully, a lubricant can help.
Ovarian cysts. Cysts are a different condition than endometriosis, but the source of pain is caused by the same concept. Deep penetration can move the cervix and aggravate the painful, inflamed cysts.
Vaginal atrophy. When estrogen drops with menopause, the tissue of the vagina tends to grow inflamed, dry and thin. Ouch.
Muscle spasms. Seriously, a vaginal muscle spasm? Muscle spasms of the pelvic floor are called vaginismus, and they sound horrifying.
Source: SheKnows