i have one scrotum

Some people have a testicle on only one side. On the other side, the testicle is completely missing or it may be felt as a lump in the groin. In either case, it is called undescended testicle. If you are a teenager or an adult with an undescended testicle you should definitely see your doctor. Your doctor should refer you to a hospital urologist. There is no need to feel at all embarrassed, because all doctors know this is a problem that needs attention. There are at least several issues that you will need to discuss with the urologist. If you have only one testicle you may be worrying about fertility. Although the undescended testicle probably isn’t doing much, you need not be too worried because your other normal testicle is likely to be producing many millions of sperms. If it you, you can ask the urologist about having an artificial implant to give the appearance and feel of a normal testicle. Yes, you need to exercise in order to improve your physical and mental health. You don't need to go to gym, you can work out at home or outdoors.