Let me make sure I see the timeline of what you did.
You made your first post about this problem last Sunday, and said that the edging episode happened a few days before.
Your counter shows you are two days out.
If you edged for a long time only a couple days ago, you would still be a little sore.
(I myself have needed about four days to recover from a binge.)
Our balls, as I'm sure you've noticed, are not evenly balanced; one hangs lower than the other.
It seems then that one ball may be favored over the other, and that may be why you feel greater strain in your left.
@IGY says that he got that in his right.
The tissues of our dicks and balls are not tough; they are soft and tender.
Any exceptionally vigorous rubbing down there will inevitably tear them up.
You should certainly watch this over the next few days.
To keep yourself from being tempted in looking at your stuff, remember why you need to do that.
You will be inspecting possible damage, and you should not want to repeat the behavior which may have done that damage.
I don't fear that you have done yourself any irreparable harm.
The human body, as I noted before, has amazing ways of healing itself.
But, I am not a medical doctor.
You know that if this condition worsens, you will need to see a urologist.
So much of what we say on NoFap is a lot of emotional and philosophical hot air.
Your worries are very real and show us that there are physically real reasons why we should not abuse ourselves.
We must be practical men about all this.