I am 42 years old, and I had a tubal ligation when I was 24 (don't remember what kind, sorry.) My period is late, I feel bloated and constipated, my breasts hurt, I've been having bad headaches, and I have had some slight cramping. Nothing like I get with my period, though. I am a little more moody than usual, and can't eat enough salt or drink enough water. Could I be pregnant?