Okay ladies I need help!!!

I had what I thought was my period it was three days late then when it decided to show up it wasn’t heavy at all. It was light and I had a lot of cramping way before it started. On the 4th day there was nothing. A couple days after all I had was light pink discharged and it lasted for two days I Believe. I used pre seed 4-5 times before period arrived. Has any of you ladies had this problem or if so what was going on?