NuvaRing and lower back pain

I have Endometriosis and got my first surgery to remove a myoma this year. I had to start using birth control because of the risk of having other myomas and my anemia. I´m using it since 9 months and the first 3 months i was feeling good, even if it doesnt affect at all my bleeding. I was feeling better with my mood/PMS, got bigger boobs but the rest was the same. But, after 4-5 months i started gaining weight, having headahes quite often, still dealing with my anemia, and now i have dryeness in my vagina. Really low libido, my sexual relations are painful, i don´t recognize my body. I´m not able to connect with my body. I have my appointment with my Gyne soon, i´ve decided to stop using it.

I was put on the pill at 18 for irregular periods, had no problems after the normal first months of weight gain and mood changes. Later on I started a shift job in which I was on alternating shifts, 7a-7p, 11a-11p, 3p-3a, 7p-7a it was impossible to continue taking the pill at the same time everyday. Also I was working in a different state than my OBGYN and traveled alot so planning a procedure was not feasible. I was started on the ring and it was so much easier! My mood swings, breast tenderness were less, I lost some weight. Only thing was having all the symptoms of a 5 day period shoved into 3 days-so more blood and worse cramps. Previously I never needed a heating pad or meds-now I do BUT its only for 3 days. Overall best decision ever to switch to NuvaRing.

Easy, lacks significant side effects (for me), has worked thus far, BUT I think my period is heavier and the body cramps are worse than normal