It might be too early to say either way; so you may be in for even more tests to rule out yet more possibilities. Along with those that you've probably already been tested for, you might need to be tested for things like small vessel disease, endocrine (hormone) imbalances and nutritional deficiencies; as these can all produce the symptoms that you describe...but so can MS.

It's frustrating, I know...as do most of those here. The main thing is to keep going back to the doctors and specialists until you get some answers; no matter what your age.
The earlier you get a diagnosis, the sooner appropriate treatments and therapy can be initiated.

One of the common denominators with neuro-immune and auto-immune disorders is the appearance of those who suffer them; we are often told that we 'look healthy' or 'look so good' especially early on in the course of our diseases.
If you hear that from others, don't be put off; those who say things like that probably mean well, but know little about these types of diseases.
But if you hear things like that from a medical practitioner, please find another one who is more educated.

Good luck and please keep us posted on your journey.

With love, Erika