i think i'm sick. i hope it isn't cancer

I don't want to die just yet, you know? I still have my daughter to raise and my sons still need me. But because I feel so terribly sick, and because I still have those little nodule like areas on my abdomen(you can't see them, but you can feel them, and they are tender to touch) and now on the back side of my arm, I'm going to the doctor tomorrow to find out why the heck I'm so exhausted , and what the heck all these nodule like areas are...........and why I'm having trouble breathing..................call me a sissy, but I'm scared.