am a female, 18 years old. I have known how to masturbate since I was 13 years old. At first, I only felt it from the outside of my vagina, but when I was 14, I went to pee and saw that the color of my urine was more blood-colored. I thought it was my first period, but it wasn't until I was 15 that I started having my period. When I was 17, I tried to put my fingertip about 3cm into my vagina, but I couldn't feel if there was a hymen or not. So doctor, can you tell me if I bleed after masturbating, does my hymen break?