I am starting my first 3 day course of steroids tomorrow and wondering what to expect?

I have not been right since the break in my refills for my Ampyra and though better I'm still sliding my feet rather than picking them up. I now have a fabulous squeezing with severe left side pain around my ribs which upon examining my neuro noticed had a significant lump under them.

Went to my GP who ordered x-rays that showed a sizable mass under my left ribs and am getting referred for a CT.

Meanwhile the pain has been intolerable and now includes a squeezing of my pelvis and as of this morning blind spots in my vision on the left side.

Hope the steroids help with all this tightness and pain and that the CT doesn't amount to much.