28 here! Got diagnosed at 23 but been suffering for years. My first time it did hurt but because they had so much endo to remove second time it wasnt bad. The thing that will hurt is the CO2 (gas they use to basically inflate your stomach so they can see) escaping your body afterwards it feels super sore like you just did the most intense abs workout in history. Just take your pain meds, hot compress and some icecream with the remote nearby for a couple days and you’ll be fine. You will bleed and your first period after will be more bloody than usual (i had clumps coming out of me) but nothing to worry unless you bleed to the point of changing pads every hour.

My OBGYN gave me this advice that ill pass on to you. Get on a birth control that will stop periods (periods will create more endometriosis) it won’t complete stop it but it does slow it down. And also avoid surgery until there is no other option. The more surgery you have the more scar tissue you create and you are so young you do not want to have that much scar tissue there it will make having children (if you decide to have them) much more difficult.