What Causes Pain In Lower Stomach Area?

Hello Dr Grief My name is Lee Baker - a lady in her 60s - living in the Great Southern region of WA. Approximately 10 ten ago I began experiencing quite strong pains in my lower stomach area (just above the public line). Went to three doctors. One told me it was only scarring, the second said I had a bladder infection and the other told me that I was developing IBS. At that stage the pain came and went and was bearable. Now, since the past few months, the pain is becoming rather unbearable (worse at night). However, if I gently massage my lower abdomen the discomfort eases. I do not suffer constipation, quite the reverse. I have not visited another GP re the problem (after getting different suggestions). Dr. Grief, do you have any other ideas as it what it could be. Thanks, Lee Baker