What Causes A Vaginal Discharge With Cramps And No Menstrual Signs?

My last period started april 8 on april 17 me and my boyfriend had unprotected sex and he ejaculated inside of me. I never got my period for may and the past week I've had a lotiony clearish vaginal discharge no odor or aign of infection its just there at random times. Ive had minor cramps that come and go and they always occur after sex lately.My next period is due the day after tomorrow I'm usually able to predict when my period is going to come by the way it usually feels right b4 I get my period and as of right now I don't feel any of my usual period signs