stress fracture

entered a half marathon in feb of this year completed it and the recovery went well with the exception of my left foot. X-rays, bone scans and the verdict a stress fracture and that kept me out of my first ever triathlon which was The Rookie. I felt so broken-hearted to see my friends that trained with me to compete and complete our first tri and me standing there and not be able to do it. Now i did support them as they were in transition routing them on, but deep down inside till this day it bugs the you know what out of me. Tried every theraputic actions i could think off ice, heat, massage, no running, pool sessions and still i have that little nagging( i won't say pain like before but soreness). I'm new to this type of injury, well never experienced something like this, can a stress fracture really take that long to heal?