Im recovering from an adductor injury. I wish someone had told me that an adductor strain is one of the most niggling of injuries. I had thought 2-3 weeks was all I needed for a full recovery. It has now been 11 weeks, and although it is much better, Im still not 100% recovered.
Adductor muscles strains do not respond well to excessive stretching. I wouldnt stretch it too much. I would reccommend strengthing it with isometric holds by squeezing a ball between your knees while lying down. I have found the yoga "triangle pose" the best way to stretch and strengthen the muscle at the same time.