That is pretty consistent with CMT, fatigue will result in increased tripping, etc. I have the same issue after a long walk. Dizziness when standing up quickly can be a symptom of autonomic issues, but I have always had it and was cleared as far as autonomic neuropathy.

ok one more thing i have noticed...when i sit with one leg crossed over the other my foot "bobs" constinuosly without me meaning to....what does that mean? thanks so much

Could be restless leg syndrome, I have had that since I was a kid. I often bounce my feet continually when I am seated at the table, used to wave my legs continually in the air when I was a child. I actually was disciplined often in elementary school for not sitting like a lady- this was the sixties with ridiculously short skirts and I was an unusually, even unnaturally, tall child. ( I am 6'2").
RLS often accompanies CMT.
I only just asked my husband if it annoyed him, after more than 30 years. His "not really" was unconvincing.

Sitting that way, alot can compress the peroneal nerve behind the knee. Some people are sensitive to this nerve compression, and if done alot develop foot drop.

Looks like you have many of the symptoms of peroneal nerve compression... frequent sitting, leg crossing etc.

http://emedicine.medscape.com/article/1141734-clinical

We cannot copy portions of Medscape here so you have to join to view that link. It is free and and easy.

Frequent tripping and paresthesias and/or pain may be present.

Since you sit in classes alot at school that could be your trigger.
If you cross your legs alot in addition, that puts further pressure on the nerve. I have read that with less fat on the body, the fat pad that normally protects this nerve is lost, so it is more prone to irritation.

Seems like it may be your problem.

If you Google peroneal nerve compression
you can find more details.
example:
http://www.nlm.nih.gov/medlineplus/e...cle/000791.htm
http://en.wikipedia.org/wiki/Common_fibular_nerve
this wiki article shows an anatomical diagram.

I would hope for you in this case your symptoms are a simple lifestyle change and not CMT. So I do hope your genetic testing is negative, for your sake.

mrs.D - actually i hate sitting cross legged and barely ever do it but that could be the reason for the foot bobbing thanks

Not just the foot bobbing, but also the foot DROP (tripping etc) and tingling can come from this large nerve being irritated. Just sitting for long periods with the knee bent, can irritate this nerve.

Please read the links carefully.

thanks i will def. read the links...at this point i dont even know when genetic esting will happen because my appt at this point is in the winter but i prob wont be able to be tested until spring (argg) i still dont unerstand how the tingling (while standing) would be caused by this? thanks so much

I would also suggest to you that you do stretches that do NOT bend the knee back. I know many runners do this because I see it often. That will kink your peroneal nerve dramatically.
I'd do lunge stretches against a wall instead.

There are also hamstring stretches for the leg/knee, where you elevate the leg,
heel on a support like a step, and stretch the leg out and bend as far as you feel comfortable. This realigns the knee and was a great stretch for me when my knee dislocated years ago.

So you have some time to try to improve your issues yourself.
Once you get a CMT diagnosis, you know, there is nothing you can do about at this time. Most suggestions would be like you are hearing from Kitt and Suzanne here. At least you only have tingling... which is only a beginning. Tingling is common for most people. Everyone gets some now and then.