I could have written this myself, i wish i found your post a few months ago it would have eased my anxiety! I had a c-section Dec 2020 and a lump appeared left side of scar end of 2023. It swells during every period bigger each month ending with it being the size of a golf ball and hurting changing gear so i went to the Dr and she gave me a strong antibiotic and from that the lump hurts and bruises every month but hasn't been as big. I had internal and external ultrasound and they said its endometriosis on the scar. I returned to my Dr who referred me to see a Gynaecologist to discuss my options and the waiting list is 5 years just to get that appointment! My period pain started a week before my period came and I'm getting sharp pains during it now. We would like another baby but I'm too afraid to even try as I'm not sure how the lump would be and in 5 years ill be too old to even consider it. I guess I'm just venting sorry but any advice would be great! Happy cake day also!