I have had painful periods for years eventhough on pill and also really heavy ones. often clots come too which can be scary. the GP thinks its endometriosis so am having key hole surgery on Wed. I am a bit unsure what to expect and if I really do have this. the thing is I have been having painful sex and the last few times it is so bad he cant go in as am screaming with pain... is this to do with the same thing? thanx.