Hi, I am 26 years old, 6'1, 216 pounds (slightly overweight by medical standards). No serious medical problems in the past and in general quite healthy.

I recently developed an occasional pain that will shift from testicle to testicle but primarily affects the left one. It is is a squeezing dull kind of pain that is more annoying than painful. It tends to not last long but continues to recur. I thought it might have to do with anxiety and stress since these last couple of months have been quite hard. I have been relaxing more recently but the pain still comes back (with less frequency but still). The pain sensation tends to drift from my testicle into my abdomen on the side that hurt.

I have done the testicular cancer check several times and have no lumps or anything out of the normal. It does however feel like my left side testicle changes in size. Should I be worried?