Like Wilf says, being stressed & anxioius can often make symptoms flare up. I know when I’m stressed I don’t do as well. But keeping calm is easier said that done when weird, unpleasant & scary things suddenly start happening! Things like meditation will help (I find mindfulness meditation really helpful), and simply talking to others about how you’re feeling.
Give your GP/neurologist/MS nurse a call too, and tell them about what you’re feeling, and see what things may be able to help with the different symptoms (your GP can refer you for Cognitive Behavoural Therapy too, which is known to help with stress/anxiety).
And, of course, ask us all as many questions as you need to, and hopefully you’ll find the answers you need.