I am having a dull ache in my left shoulder, arm, and elbow. I am also having extreme nipple soreness and stabbing pain in my left breast, but both breasts are sore. I had what I thought was a full period last month so I don't think it is pregnancy. However, I am having some symptoms that can be contributed to pregnancy. I can't seem to find all of my symptoms in the list of pregnancy symptoms. Is there something else that could cause occassional dizziness, the left arm and breast pain I stated above, slight night time nausea, some cramping on the right side in the ovarian area, and fatigue? I do take a thyroid supplement and am currently overweight. HELP PLEASE!