The side of my foot hurts really bad when i walk or when i push on it i'm only 22 what could it be?

5th metatarsal: Could you be a little more specific? If it is on the outside it is important that you see a physician & have imaging to determine if you have a (stress) fracture. If there is a fracture then treatment usually consist of crutches, boot/ cast, or surgery. There is a chance that a fifth metatarsal fracture may be a “jones fracture” and have a high risk for nonunion, or failure to heal properly.

More specific: If it is on the outside of your foot (the side of the pinky toe), it could be a stress fracture of the 5th metatarsal (common for people with high arches). It could also be tendinitis of the peroneus brevis tendon. See a podiatrist for a full examination with x ray, diagnosis, and treatment options.

Tendonitis stress fx: Painon the side of the foot with no history of an injury is often due to tendonitis or a stress reaction or fracture. See an orthopedic doc or a podiatrist for evaluation.