As for the test decreases performance in the gym… well that is exactly what i think when using the longer esters.
Before i get my gains and “sted-like” feelings… i have a drop in energy, strength plateaus a little and i stagnate… until 5-6 weeks.
Does actually sound like it is becoming an abscess… from the limited info you have given and seem to have yourself.
If it was me (and there will be differing opinions on this) then i would; Wait upto 10 days to see if i healed naturally. I would then visit the doctor and be honest as necessary if it was worse on day 10 than on day 5.
If it is indeed a sterile abscess that only gets worse in that time then IME it WILL need lancing.
It may not be any of the above though. I dont know you or the problem you may or may not have in any intimacy. Please make sure you consider that when taking any advice i give.