Am I about to miscarry

I'm two weeks late. I've been running a fever for the past two weeks off and on. I've had white discharged. This morning I felt like I wet myself and their was lots of fluid. All day I've had severe abdominal cramps and back pains, almost to the point of throwing up. I checked my cervix position then and it was seriously almost sticking out and was rock hard. When I got home I passed this firm white jelly particle about the size of a thumbnail. It also had blood streak around it making it looked like it detached from somthing. What do y'all think, I haven't started bleeding yet.