Pertunia, what kind of "specialist" did you see? A neurologist? Have you seen a rheumatologist? And at age 43, have you gone through...or are you starting through..menopause, yet? (This can happen in women as early as our late 30's). Pre-menopause, early menopause, and menopause itself can cause lots of symptoms you describe, including fatigue, tingling, other things.
In other words, there can be lots reasons for your symptoms, and rather than you trying to guess and treat each individually, you need to start with one doctor -- it can be your family physician, to begin to find out what is causing your problems.
But before you go back to any doctor, you need to sit down and list your symptoms, beginning with the most troubling. Try to remember around when it started, whether it has gotten worse or better, or seems to come in cycles (sometimes you'll find a monthly cycle, sometimes seasonal).
And if the specialist you are seeing IS a neuro, then you need to be calling her back and saying something like, "OK, I was treated by you, my symptoms are worse, and/or here are new symptoms, now what?"
As for your vision, an opthamologist indeed is the one you need to be seeing -- a physician whose specialty is organic eye problems. An optometrist surely can figure out what might be wrong with your vision and offer corrective lenses -- glasses -- but an opthamologist will be able to determine whether there is anything medically wrong with your vision, causing problems. Optic neuritis is a relatively common problem with people with MS, and while an optometrist can sometimes see it if the optic nerve is pale enough, an opthamologist really is your better choice.
But again, rather than you going from doctor to doctor, guessing which specialist might best serve you, you really need to get back to your family physician, and start from scratch, telling him/her what is going on, how long it's been going on, and asking where you need to go next.
Good luck.