I am wondering whether I could be pregnant. I just threw up alittle bit ago for no reason, my appetite has picked up, my breasts are mildly sensitive, I have 2 days before my period is due, lower backaches if I walk for more than an hour, get up early morning to use bathroom, can t sleep a full night anymore, vivid dreams. Weird thing is 5 years ago I got my tubes clipped. So I was just wondering what are my chances of being pregnant?