falling

I have just read a number of post which was about walking.  Even though the assessor at my pip assessment, got me to say I walk 1 to 2 mins with rests, I also told her that I have fallen a number of times indoors and I put on my pip form I have fallen outdoor and stumbled.  My latest indoor fall was a couple of weeks ago down some stairs.  Seen an OT and she mentioned my staircase can be adapted to make the stairs safer to climb.  I also told the assessor that about 2 weeks ago I stumbled after leaving my car on the kerb stone.  Does that mean, I cannot be safe out?  Can this help me if I get the worst reply from my assessment and go to Tribunal? I also put on my form because of fibromyalgia some times  my muscles tense up and I can only walk a few steps, when this happens if I am indoors I just have to wait until I can shuffle back to my chair.