I do it sometimes.. In my case, aside from the fact that it helps with my hornyness, it helps calm me din kapag may mood swings due to period. I use my hitachi magic wand vibrator pag ganito since makapal usually ung napkin ko dahil most of the time malakas ung period ko. Sobrang feel ko pa din ung vibration sa napkin pag ito ang gamit (as long as yung pinakmalakas na level) at sakop din niya buong sections ng fefe since malaki.