Sue,

to my knowledge the only way to diagnose it with certainty is with a laparoscapy, and if they find any they can remove it at the same time. I had one last year and got pregnant right afterwards, without even trying. Other symptoms are pain with AF, during sex, bowel problems, although as I said my only real symptoms were spotting and infertility, and I had a fair bit. May not be the case with you but worth bringing up with a doctor maybe, preferably a gyno.