help me please

I’m 17 and i’m new to exploring my preferences to sex and masturbation. literally like 3 days before my period i get extremely horny even though i’m a virgin. I’ve tried fingering myself twice, but when i do it i it get bored and i don’t reach my climax even when i think of touching myself i get wet, and afterwards i feel really guilty. I could use some tips on how to get over these things please.

Also i’m not confident in my body so whenever i try touching myself I feel like i don’t deserve it.

I could use some tips on how to get over these things please.