You're probably a hypocondriac like me. Don't do this to yourself. it's not healthy. Maybe something happend in your life to make you worry constantly about your health, but if you take very good care of yourself, you'll heal from anything! Except maybe the major injuries and illnesses, and even then, unless your death was instant or totally uncurable, the body has a tendency to heal itself, my dad says. So stay calm and don't worry, be brave. the more you worry, the worse it will be for you. If you need or want reassurance, try talking to a doctor for your symptoms. It could all be in your head or maybe it could be something else, but in the meantime, it's counter productive to your life, to worry so much. It's not only unhealthy for yourself (heart disease, high blood pressure, depression symptoms), it can make you look older too! So take it from me, someone who's been there, done that. there's really no use in always wondering: "what could this be? ...Do I have [insert injured part, disease or etc. here]?"
Part of dealing with life and it's problems is solving them, and worrying about it, may only be the first step but it certainly doesn't solve the problem. It's like getting help for an addiction, the first step is always realizing that you have a problem and you want to solve it. Good luck and I hope you recover from whatever ailment, physical, emotion or mental, in nature.
Best wishes -Sue