Really bad pain. could I be pregnant?

I am 2 days late for my period. I've never missed a period. Right now it literally feels like I'm on my period, but no blood only mucus (sorry tmi), & my normal cramping. My boobs are also a little sensitive. I took an hpt yesterday that was negative. I will take another one in the morning. The pain I feel is almost like a burning sensation on the left side & I can feel it in my leg. But, not my actual stomach. Does this sound like pregnancy?