I need someone to help me figure this out😭

keeaira

So on the 19th I had protected sex. I'm on the mirena for 2 yrs now. We used a condom. Than the next day I'm having watery discharge than on the 21st I'm having yellowish discharge. Today clear discharge and my body feels weak and I begin really sad & crying. And Today my period suppose to start but it's not on. I Have a doctor appointment tomorrow.