So a week and a half ago I had horrible cramps. I was 10 days away from AF and got worried and called my Dr. He checked me and said I was fine. I was worried that I had an ovarian cyst like I had once before. He said he thought my cramps were caused by implanting. So the cramps have been coming and going. I've been nauseous off and on for days. And AF was due yesterday and hasn't come yet. I tested this morning and got a BFN. Is it possible that I'm pregnant and its still too early to tell or am I losing my marbles??