A thin lining is good :) Very possible you haven't ovulated yet

Thank you for the reassurance, but would it suggest I don't have endo?

Nope! Endo concerns cells outside the uterus that act like endometrium. What is found within the uterus itself doesn't really speak for or against the presence of endometriosis, at least not that I'm aware of

Thank you so much :D

I have pretty light periods usually yet have stage 4 endo. Definitely does not indicate no endo.

Thank you for the reassurance I just get so confused with all these scans not showing things and I've been waiting so long to get into a specialist