Self myofascial release of the adductors can be nearly impossible except when in a seated position. I personally found working the musculotendinous attachment deep into the groin area assists with pain associated with hip impingement and minor labral tears.
Obviously, you should go to your doctor to investigate any such injuries.
Get a lacrosse or baseball. Don't go till the point of bruising.
There should be no numbness or tingling created. Move the joints above and below the balls contact for added benefit.
Skip to the 5:49 mark here for a video demonstration.