Nordic Track Skiier Injury?

I have been doing the Nordic Track Skier a good bit this year. I have also notice that I have left hip pain in the front at my hip flexor. Can this be due to the hip flexor flexing and while the pad pushes on the muscle. It can be sharp at times and the be ok. That thought just came to me last night. Where should the pad be? Right now it is at my waistband.