Im 17 years old and about a month ago i read an article on melanoma. I have lots of moles so i got really scared. I started to examine my moles constantly, everyday to see if they have grown. I became very moody... drove my parents crazy with my constant talking about my moles... couldnt stop crying. Im goign to a dermatologist this Friday.
However, for a couple of weeks now ive been having breathing difficulties and sometimes makes me cough, but they go away if i watch a movie or when im with my family for example. I suddenly get lightheaded for a couple of seconds when im walking down.
Now, im scared that i have some sort of serious cancer... because my stomach feels bloated. For a couple of days i had trouble with bowel movements and had really dark stools (i thought it was due to bleeding), so i started eating mostly fruits and veggies... and now i have yellow stools which i read could be a sign of something serious, like pancreatic cancer. I would occasionally get a stabbing pain on the left... around my abdomen and waist. I have a constant back pain also... which could be related to my period because i am on it right now. I also get headaches, neck pains and muscle twitching and trouble falling asleep.
My family does not have insurance... but i would really like to get tested for all kinds of things that could be wrong with me... and at the same time i know that there is probably something wrong with me mentally. What do you think i should do... i am already worried that the dermatologist is going to be very costly for my parents... i dnt want to stress them out any more and make them pay for other tests.

ps: I was also scared of the swine flu when i had to go to Chicago... i bough a bunch of sergical masks. I guess im paranoid. The funniest part is that i want to be a psychologist... i guess i would have to stick to math instead since its what i am best at.

So do you think i have cancer from all the symptoms i listed above? any help is appreciated and im sorry my post is so confusing. I am just sooo scared.