What Causes Vaginal Bleeding During Clitoral Masturbation?

Hi I m 28 years old. I ve been having irregular periods since they started at age 12. I ve been having regular periods for the last 3 months, I ve also been masterbating very heavily as well. I didn t think much of those two things somehow being related. I got married towards the end of February and we decided to wait till we moved to have sex so I haven t been masterbating. I was expecting my period to come the beginning of March but it never came, about two days ago I started masterbating very heavily again and tonight when I got done I seen blood, there was no penitration and I m certain I didn t scratch myself. Since I am trying to get pregnant I really wanna know if masterbating regularly will regulate my period.