I'm so sick of this

My(18f) periods are killing me rn, idk if I'm weak or what's wrong with me but it's making me dizzy and sorry for the tmi but I have changed thrice since the morning ( I'm just at home sitting and studying) and my bedsheet is all red. My mom is scolding me for staining the bedsheet but it's not like I'm doing it intentionally 😭 idk why ever since she hit menopause she makes periods so hard to deal with like not letting me enter the kitchen or her room , doesn't like it when I touch her and all. Also the cramps istg yesterday I cried because of the pain I'm considering taking a painkiller but idk if it's a good choice.I tried hot water bag too and it's not working, I went to see a gynae last year and she said shaadi ke baad sab theek hojayega can anyone tell me what changes after shaadi? 😭 I can't deal with this shit anymore. On top of this all my files on my laptop got corrupted for which I had spent so much time organising and "saving" . Can someone please tell me how to deal with this