weird....

So a couple days ago, I had some cramping as if AF was coming. Thought she was about to show up, on time, like always. So I put a pad on. Went through my day yesterday with some cramps, but still no period. I had white creamy cm since though. No cramping today, just really hungry with some mild back pains and sore boobs. Took a pregnancy test this morning, nothing, and still no AF. Anyone else have this problem and end up pregnant?