Mother is mad at me...?

Lailla
So I have been taking special care of my vaginal region a lot lately because recently I have become sexually active. She does not know I am sexually active, nor is it her business. Vaginal health should always be something every girl cares about. I have feminine wipes to wipe blood away, no other reason. I have a menstrual cup and the rule that was written about how to care for it says to boil it in a pot. When my mother asked why the air smelled "burnt", I was honest and told her. Any interest I take to care for my body she gets very upset. I am 18 and have a plan to move out, but I am not sure when. It is a very time sensative situation. How can I be a woman, care for myself, and such without making her upset? I was in a shelter for a year, then moved in with my boyfriend's dad's apartment to a local shelter again (so that I don't burden his family. I was their maid and nanny, so I earned my keep, but still) before coming back home to mend our bond, like my mother said that she wanted. Anything from trying to upgrade my clothes from graphic tees to more professional-wear, to feminine hygiene, to how I care for myself at home upsets her.