Ecently I've Been Feeling Very Tight Groin Area With One

ecently I've been feeling very tight groin area with one testicle being tender. this is accompanied by a bloated stomach and some gas pain. I have noticed my penis has gotten an inch or an inch and a half shorter Over several years. I have noticed that when I stop carbohydrates in my diet, the bloating sensation and much of the symptoms go away. What would be causing these issues?