So after 10 years of nagging doctors I finally had a laparoscopy and hysteroscopy to determine whether I had endo.
Turns out with all my nagging and persistence I was right.
Unfortunately, apart from a chocolate cyst being removed the doctor could not remove the endo as my bowel, bladder and womb etc are all stuck together! This was such a shock as I knew I had symptoms but wasn't prepared for it being the worst stage.
Next step - I have a follow up in 12 weeks time. Consultant has suggested that I have a more involved operation with bladder/bowel specialists there etc as they need to ensure the organs aren't damaged.
I really feel like screaming at my doctors saying "I TOLD YOU SO!"