Confused and need some help ...?

I am a 16 yr vergin girl, and just started having s via a vibrator (really good one!), and I am enjoying pleasure with vibrator.twice a daily .i have vibrators of different size ? which should i use small or bigger ? what should be perfect size according my age ? will it increase the size of vgina ? is it safe to use them ? i have thick pubic hairs and i shave them three times a week .can i remove them permanently or lighten them ? i feel uncomfortabl with napkins during periods is there any alternative to napkins ? can i stop my periods permanently ?i have never gotten an from boy, or any other men . should i use vibrator or fingure only ?Thanks for any help - I greatly appreciate it!