bad foot problem

ok I have been suffer from severe arch cramps in both my feet since i was a junior in high school (so about 4 years) and its starting to get worse… im not sure what it is but there are 2 large bumps comming out of the side of my foot a little behind my arch… (when you push on them it makes my big toe move left and right.) and its not alot of pain on the bumps. rather its on my arch (close to the middle). and it hurts mostly in dorsiflexion. my trainer thinks it might be hypertrophic muscle… or fluid built up in my foot… anyone have any opinions on what it might be…