Replying to Boot Question

At the beginning of last season I got some dropkicks, was fitted at ski rack in Burlington and they were great throughout the season, no pain, no problems. I just finished my summer set up and after about 10 minutes of sessioning it my left arch started to hurt very bad, to the point where I had to stop and take my boot off. It was a sharp pain un the left side of my left arch. My right foot had no pain though. My dad thought it was because my foot was not stretched out, or from hiking so much. What do you think?