Women who know about menstrual and pregnancy,i need some advice fast please.?

I have asked this question twice already.. around my first day of ovulating my boyfriend and I had sex. My period was supposed to come on the fourteenth of June, I was three days late and on the third day when I went to use the restroom I noticed I had a brown discharge so I didn't think anything of it just went on with my day. Later that night I wiped again so I figured my period started because I had light pink, lighter that usual blood but very little. So i went to sleep and woke up the next morning thinking I started but when I wiped again all I had was a watery light pink discharge with a little bit of brown in it. I havent had any clots or heavy blood like I usually do and I am cramping but nothing just this watery light pink discharge and I already feel the cramps like my period is about to come for the past two day but i get nothing just this discharge?