I'm probably dying and no one knows or cares
Why do you think no one cares?
I guess it's because I'm not "hot" enough, I'm not popular.
If you think you might be dying you should seek a doctor. Feeling like no one cares is because you haven't told them what is going on.
I'm not sure that I can handle it.
I'm sorry you are feeling that way, but I think it might put you at ease if you brought someone along with you. You should see your doctor if you think something might be wrong and share with your family and friends what is going on. No one can help you unless you let them in.