Ana, I am sorry to hear about your very, very, bad day. You are entitled to get them every now and then, especially when on meds. I lived in denial for so many years. Then I was angry for all the things I couldn't do anymore.
Truly I never came to acceptance, never felt it made me a better person having MS. But I don't dwell on it. I try to forget it. Everyone gets something, even babies. Nobody dies healthy unless extremely old or hit by a bus. MS is a pain in the hind end, but better days do arrive, so I wish them for you, and your boyfriend too.
Ask your BFF to come visit you is you can't do the stairs.