Masturbation

hi xx

I’m 15 and I feel turned on usually a week or two before my period while i’m ovulating, so obviously my first instinct is to masturbate, but I can find anything that feels right. So far i’ve only tried my fingers because I can’t just ask my mom to buy me a vibrator or anything because she’ll get weird about it. I’ve never had sex so I can’t do what “feels good” because idk what feels good. Any advice ??