Blue Ball or Varicocele or Hydrocele or Hernia or testicular Cancer!

So, i' ve been 9 days into nofap. and since day 6 my right testicle has swollen incredibly as compared to the left one. It also hurts a lot on touching. On self-examining it more carefully, there's actually a painful lump on the top of my right testicle from where the vas deferens joins.
Now, i am confused should i fap? what if it is just blue balls and i fap in vain? You all guys here, have you experienced this?
I tried lifting a heavy weight this week, could it be related to that? Please tell me its blue balls! Ans yes i am experiencing low libido too. but man it hurts.
if its blue ball, when should i expect it to go?