Did they find out what happened to make your heart rate and BP go so high?
Is your thyroid well controlled with medication? Have you had a recent test for it? Was it normal? Even though your symptoms are rather extreme for an over or underactive thyroid, it is possible that could be at least contributing to your symptoms. It can cause the numbness, weight changes, aches and pains, sleep problems, and changes in bowel movements. If you haven't had a TSH test very recently, go in and get one, just to make sure.
Have you had a doctor look at the lump on your stomach? Did they say what they thought it was? Did they do any tests on it, like an ultrasound or needle biopsy?
Are you on any medication for any of this or anything else?