Help 15 years old and embarrassed

Okay so I live with my parents still so my mom lets me use her td bank card sometimes to order things and I been so horny I already and having sex and don’t judge me I’m being careful to not get pregnant or stds but I’m horny all the time I’ve already purchased a rabbit vibrator and dildos but she hasn’t found out about my little collection so the other day I purchased another dildo with her card and she is overdraft but doesn’t know it was a dildo because she called the bank but don’t think they told her I hope she doesn’t find out so embarrassing I’ve always used it for my needs but this time she might find out if they tell my mom. Now during quarentine I’m more horny then ever I’m usually really horny but now it’s worse and when I can’t see my bf I like to touch my self and explore myself what should I do? My mom is usually strict?? She knows I lost my virginity at 13 but doesn’t know I kept having sex the guy was older so she put him in jail for having sex with a 13 year