I've Been Having Pain On My Right Foot, It Looks

I've been having pain on my right foot, it looks slightly swollen on the top part and tender to touch, as if bruced: but I have not injured it, there is no discoloration of skin; there is some numbness on the 3, 4, n 5th toes as well; it is uncomfortable to walk on when flexing; any idea what this could be?