Hi there, It's good to see you have an appointment with neuro soon. Hopefully he does a head MRI. I've had your symptoms one time or another, that tightness around my abdomen was annoying. I kept thinking my pants or undies were tight, and I'd get that numbness too. It started lightly from the toes on up to the abdomen on my right side, then left, but really no pain, and I was happy there was no pain. I got the heart thing too, but I had the heart checked out and my heart is fine. In January the neuro told me that it looks like Multiple Sclerosis (MS). Not to scare you. Your symptoms are your symptoms in a different body. I did the MRI of the brain and it showed lesions (like small clouds). They also performed a Lumbar Punture (LP) and ran specific blood work for MS and it all came back positive. I'm not on meds yet, but it's treatable. It helps when you journal symptoms because when I would get to the neuro I didn't have them anymore, but she would ask me if I felt this or that and I'd remember I had at one point. Again, not to scare you, but browse through the MS board. Keep us posted. Hope you get better soon.