I would agree with Dr. Reinkraut's response below. Trying to explain a "lump" to a Physician and your Physician actually seeing the "lump" are two different things. There are a few differentials to consider, everything from a simple blister, bruise, to a plantar fibroma. Seeing a specialists is priceless! If your symptoms improve with stretch, massage, ice and anti inflammatories within a week your good. If they do not change or get worse, you should see a Foot and Ankle Specialist sooner then later. Dr. Mikkel Jarman, DPM Preferred Foot and Ankle Specialists in Gilbert Arizona.