Injured pinky toe 2 weeks ago now theres a small hard lump at end of metatarsal bone near or on top of cuboid bone. What could it be?

A couple things. Normally the styloid process at the base of the fifth metatatarsal is prominent, perhaps you just realized how prominent it is with all the attention to that side of the foot. Could have injured the metatarsal at the same time or could be one of the peroneal tendons inflamed. An xray would be of great benefit.