My foot swells up its the left one and when i first walk on it it really hurts after i walk for awhile it eases up a bit its is painful sometimes it will shoot up my leg what could this be it is not broken?

Plantar fasciitis: Could be plantar fasciitis; a painful condition of the feet which presents classically as pain with the first step of the day which then improves with walking. Evaluation by a podiatrist could help rule out other possibilities.

See your doctor: This problem can only be solved by seeing your doctor and being evaluated face-to-face. After a thorough examination, your doctor should be able to tell you what's wrong and what to do about it.