Uhhhh... I think i masturbated wrong

Sooo I was feeling horny you know like any other person when they feel like masturbating. And I was doing it with the end of a makeup brush. At first everything was cool and normal I was cumming and everything then next thing I know my lady juices are red. I just got off my period sometime last week so I know I'm not starting. What did I do wrong? Was I too rough with myself??