Well, I pretty much know the whole enchilada - was hyperthyroid myself for many years, then had radioactive iodine treatment and am now hypothyroid.

May be borrowing trouble to worry about this before your lab results are back, but the classic symptoms of hyperthyroidism are:
- rapid heartrate (at one point right after diagnosis, my resting pulse was 120).
- tremor (try holding your hands out straight before you - are your fingers shaking involuntarily?)
- weight loss (never had this one, I'm afraid - but if you eat enough calories to keep up with your hypermetabolism, you won't see weight loss)
- loose or more frequent BMs (never had this either)
- feeling warm when others around you are not hot (kind of like a chronic low-grade hot flash . Have you recently lost your need for a sweater at night?)
- "brain fog" - I had this a lot - couldn't concentrate, poor memory.
- skin may be warm and moist, even sweaty or flushed
- muscle wasting (I would lift weights and never get any results)
- insomnia (I never had this much, but most do)
- just feeling jittery or "caffeinated", like you drank too nuch coffee

Do you have a family history of thyroid disease? (Tends to run in families - although everybody in my family got it AFTER I did, so I had no family history at the time I was diagnosed).

IF - and it's a big IF - you have hyperthyroidism, treatment options include anti-thyroid drugs, or radioactive iodine to kill off part of the thyroid, or surgery to remove part of the thyroid. There are pros and cons to all methods - don't let yourself be rushed into deciding (although beta-blockers to slow a rapid heartrate will be used right away in most cases, and will calm some of the symptoms although it doesn't alter the course of the disease).

Post your lab results to mewhen you get them

Ellie