Quiestion?!???

So I am sitting in the living room while cooking and I felt this sharp mild cramp in my uterus area right in the middle so I did a lil jump because it got me by suprise. And I moved to see if it will go away and I felt it a little bit in my cervix. So I went to piss and I had this pinkish discharge with some white egg discharge. My ovulation day is on Wendesday according to this app ....so what it could be?? And now I am laying down in my bed and I felt the same sensation but is not something that I will call pain is mor sharp and cramping. Note I been feeling a little bit bloated today. And decrease of appetite as well.