Reneelynn: This is going to sound stupid, but RELAX...take a deep breath. I'm sure you're not dying if you have had these symptoms for three years. There are many here who will give you the same advise.
First of all, I AM NOT A DOCTOR, OR A NURSE, but you must summon the courage to schedule a visit to a doctor.
In the meantime, if you can't get past this personally, seek out professional advice to get you past this phobia, and give you the strength you need to cope with this situation.
We're all friends here, and we're all in this together. Try to list your other symptoms, I'm sure you'll get some answers to help you make the right decision.
Lois in NC