This is a long-term condition which occurs when cells similar to those that line the uterus are found outside the uterus in other parts of the body (for example, on your ovaries). These deposits respond to your cycle, growing and shedding as your hormones fluctuate throughout the month, which can cause intense pain. They also leave scarring, which can produce pain outside your period, and can lead to pain that feels different and arises in odd places (for example, when you pee/poo or have sex).
Similar to endometriosis, adenomyosis is when cells that normally form a lining on the inside of the uterus grow in the muscle wall of the uterus. Though the pain can be very intense, it tends to arise during your period.
Pelvic inflammatory disease (PID)
PID develops when an infection spreads from the vagina to the upper reproductive organs. It’s usually caused by the sexually transmitted infections chlamydia or gonorrhoea. PID can cause a more painful or heavier period and can also bring on pain unrelated to your period. Sometimes unusual discharge can occur, but not always. PID symptoms tend to come out of the blue, rather than being long-term.
These are non-cancerous growths or lumps of muscle tissue that form within the walls of the uterus. They can make the lining of the uterus larger or the overall size of the uterus bigger. They tend to make your period heavier and more painful as a result.