omg this all sounds exactly the same as me! yes it took me ages too to finally get an op, had a million ultrasounds, blood tests, examinations etc. but they never found anything wrong apart from once they thought I had a polyp but turned out I didn't.
Not sure what's the next step for me, have had the mirena coil fitted to help with symptoms but so far it's made me feel worse, much more pain and more often, and constantly so bloated and my periods are heavier! Plus they thought it went missing and had to scan to see if it was even in there still.
Also I have a retroverted uterus too, which they said since I don't have endo that is probably the cause of my problems, although they also said (and I have spoken to other medical people) that it's really common and doesn't really cause any problems? So what does that mean?! They mentioned I could have ventro suspension in the future to correct it.
I'm really worried about not being able to conceive too, but I guess I won't find out until I start trying one day! Hopefully we will both one day be sorted!! I'm going to try and get referred to local BSGE centre soon, it seems to have been better for a lot of people on here, plus i've read a few people saying their endo was missed first time! xx