I ALWAYS tell people that they should look into undiagnosed Lyme disease when they start experiencing strange and sudden neurological symptoms. Especially at such a young age. I had symptoms very similar to yours when I was 23 (4 years ago) and I went from doctor to doctor without diagnosis and they all told me it was just anxiety. I also ended up testing negative for multiple sclerosis. I ended up having untreated Lyme disease. There is a great forum for Lyme disease on this forum so you should really check out that forum and post on it!
Hang in there!
Well, it's possibly MS, but your family history increases your chances only slightly, so I wouldn't pin anything on that. MS is naturally in your mind because of this, but still, lots of things can cause symptoms found in MS. Some of yours fit this, but not necessarily all. So don't draw any conclusions, as it's way too early.
I think you need a VNG test, administered by an ENT doc. Motion sickness, vertigo, ringing in ears are very likely to be in the ENT realm. Balance is often a vestibular issue. The VNG should clarify whether the problem is a central nervous system thing or from your ears.
Sharp pains all over are definitely not MS, because MS does not, really cannot, cause anything 'all over.' It's the nature of the disease. It's possible that your problems are related to anxiety, which is a very powerful force capable of causing countless physical symptoms, and it's possible that you have some disorder, and anxiety about this is causing further symptoms.
Your first line of defense is certainly a good ENT who will test you for everything in his or her purview. If this isn't your current doc, move on.
ess