My wife was diagnosed last year. The discover happened by accident doing other tests. Doctors say she's lucky because starting the therapy at such an early stage gives her the best chances to have a normal life for long time.
Everything changed during the past months. She started with the drugs, removed unhealthy food, started exercising a lot, and dramatically reduced the working hours to prioritize her health. In all honesty, she has never been so well before and that's fantastic. MS pushed us to change our priorities in life, and we are better people now.
However, despite no visible symptom, MS haunts our house like a ghost. Now having an headache or being tired "may be MS", forgetting the keys or dropping a cup "may be MS", a night of poor sleep "may be MS". Dizziness or pain? "That's definitely MS".
I spent days reading papers about MS trying to find cases similar to hers, but there is no way to make predictions. Not knowing is my hell. I try to rationalize thinking that everyone has a ticking bomb inside: it doesn't make any sense to worry just because you know yours or your spouse's. But, damn, it's so hard.