I'm so sorry your feeling so down. We all get like that sometimes. I just always try to make sure I don't let myself stay there for too long. Maybe a day or so then I make myself get up and get going. This pain is really a lot to live with so your not whining. Your just saying how you feel.
My legs haven't turned purple but my feet do a lot since I've gotten SFN a.
I hope you have a better day tomorrow!