You're definitely not alone. I have been battling horrid periods ever since I can remember and was only recently diagnosed with endometriosis like two years ago, if even that. I had used oral birth control to try to regulate my periods for years, but it seemed like after a while, I'd have to increase the dosage or try something else because the same horrible pains and what seemed like endless bleeding sometimes for like a month at a time would just come back. After being semi-officially diagnosed, I started using the Nuvaring as hormonal therapy and its definitely had its ups and downs and I still don't quite understand my body. I have yet to have laproscopic surgery (I opted to avoid it if possible), i haven't experienced any cysts or anything to my knowledge yet, but I feel I will probably end up with them at some point as it's something my family has been riddled with... Yay genetics... Anyhoo, I definitely experience extremely low sex drive, as well as pain during and after. I have been asking and researching and everything I've come up with is just, "It's probably from the hormonal changes due to your imbalance and therapy." The pain depends on the day, how stressed I am, and where I'm at in my... Cycle.. Which is completely irregular... Again... I imagine some of the pain comes from the issue of the low sex drive. It's like, the majority of the time, I'm mentally turned on to my partner, but not as much physically, you know? Do you also experience any pain, if you don't mind my asking?
And oh, my God, I'm relieved I'm not alone with the crying! I've always been a bit emotional, yes, but holy mother of Jesus it's excessive! I know how it feels to get so worked up over so little and it can be so embarrassing! I know they don't really understand either, and I'm stuck explaining myself and it's like they get it, but they still don't experience it so they still don't FULLY understand.
About having kids- I personally know it would be too hard on my body to carry children and honestly I don't want to have periods, I don't want to have the extra pain, I don't want to have lady parts anymore. I have a LOT of chronic pain that nobody wants to talk about, nobody wants to explain, and I just wish I could make others understand it so they'll understand WHY I will never carry children instead of being belittled because the sexist norms of having to validate my existence as a woman are very real. Any time I'm having a bad day, coworkers, friends, family As whomever will ask what's wrong, and all I can say is, "I'm hurting and don't really know why." I just don't have an explanation. And as if I don't feel bad enough already - structurally defective is how I see myself - about knowing I'll never know what it's like to carry my own child inside of me, it's just so much worse when others completely disregard what I say like they're in denial FOR ME about having children.
It's just all so upsetting... I thought for a while I'd made my peace with it, but I really haven't.

Youre not alone, I too used to have crippling cramps to where Id go to the ER and get morphine bc it was THAT bad. No one wants to go for surgery after surgery so I totally get it. Would you consider freezing some eggs and possibly one day when/if you wanted children you could have your own? It’s absolutely annoying to deal with and until a person goes thru it they’ll never know. Im sorry you’re going thru this and I hope this helps