This is Dr. David
testicular cancer causes a mass in your testicle.
usually these nodules are not painful.
a tender area is most likely epididymitis
or a hydrocele
or a cyst in the testicle.
yes, that is normal
it sounds like you are worried too much about having testicular cancer.
if you don't feel a nodule, you are fine.
yes, it would be a nodule you would notice.