Hi there ~
I understand your concerns. I believe that you have an injury
in your groin area after strenuous activity, when you mention that you "pulled your groin". I believe that the you might need to be examined by a qualified local doctor to rule out the possibility of a hernia
since you have been having problems with your leg and testicular area with tenderness and irritation after the incident.
I hope this helps. Take care and have a lovely day!