Tightness/squeezing in testicles/groin

i have been told that i have a mild hernia that will not be operated on – however i thought that recently it was being aggravated by my new exercise – swimming, so i started swimming with fins so that i was using only my upper body.

now two weeks into this exercise i am still having the beginnigs of tightness and sqeezing of my testicles up into my groin area

my question is – is this typical of how a hernia begins to come on?

my local gp obviously isnt interested