My last period started Oct 22, my fiance and I were trying to conceive on the dates of Nov 10-13. Normally I do not have a regualar cycle but my cycle has been normal since July 07. On November 23 this was the date my period was supposed to begin but i only spotted. The spotting didn't stain my underwear it only showed when I wiped. My breast are tender but only lightly. I feel something heavy on the right bottom side of my stomach. When I wake up in the morning or after taking a nap my lower stomach feels heavy as though my period is on the verge of coming but it goes away. I had bad headaches last week, a weird yellow discharge with no smell, and also I've been crying uncontrollably since last week. The urine test told me I wasn't pregnant...but my question is are these signs of pregnancy or could it be something else?