My symptoms were like severe urinary infection, the burning was so bad i was in absolute agony.
I happened to read a magazine article about cysts and something clicked. I said to the doc that i thought i had a cyst on the ovary.
She said "i really don't think it is a cyst," in her smug superior manner, i really hated that doctor.
Eventually she sent me for a scan, and i was proved right.
I think we have intuition about these things.