Do I have Achilles Tendonitis?

Symptoms of an Achilles tendon injury are:

Pain along the back of your foot and above your heel, especially when stretching your ankle or standing on your toes. In tendinitis, pain may be mild and worsen gradually. If you rupture the tendon, pain can be abrupt and severe.
Tenderness
Swelling
Stiffness
Hearing a snapping or popping noise during the injury
Difficulty flexing your foot or pointing your toes (in complete tears of the tendon)