Suggest Treatment For Pain In Achilles Tendon And Heel Due To Sports Activity

Hi, I train in Martial arts.I had pain in both achilles tendon and heel pain. In the beginning(6-7 months now) i put ice but more pain comes.i start stretching i could only stretch for 6 seconds before the pain come.Now i stretch 30 second without any pain.I do exercise and now i do with weights.The problem is when i do little more aerobic training (footwork)then i had pain like needle in my heel and sometimes little pain in achilles tendon.What to do to fix it once for good?