What Causes Vaginal Bleeding?

am 23yrs old i keep masturbating quiet regularly n am use to sex with my boyfriend bt he dint he dint eject his sperm any tm, so he left abrod, i couldnt control myself and started fingering ofently n i dont know i started bleednig heavyly i stoped it 4 few days n donr again bt its same am bleeding badly not knowing what to do plzzz help me is anything bad insid my vagina