I could have written that first post (aside from being married to a cis dude in my case and therefore having fears of accidental pregnancy ruining my ability to fully enjoy sex). I'm very fortunate that I found an awesome female GYN who had absolutely no qualms about tying my tubes as soon as I made my feelings clear. I got my tubes tied four years ago this month! Definitely one of the best decisions I ever made. I feel much more like my true self now.

Edited to add that I was 33 at the time.

I know one person in the same boat who was able to get her tubes tied at 23...but I think she had a lot of other health issues too, which probably helped motivate the doctors to agree when they might not have otherwise. At 19, I imagine it would be a real challenge, but that doesn't mean you shouldn't ask. If your doc refuses, ask for a referral to someone who may be more amenable. Just bear in mind that the likelihood of anyone agreeing to a tubal at this point in time is very slim. (If you're looking for a highly effective birth control method in the meantime - much better than the pill, IMO! - you can also ask about getting an IUD. Yes, there are scary stories out there about how uncomfortable the insertion is, but I have a low pain threshold and mine was still a piece of cake.)

Best of luck to you. And feel free to send me a message if you ever just want to talk to someone else with the same perspective.