my name is Joshua, and am 30 years of age. about two months ago, i discovered a little lump like a worm in the upper part of my left testicles. i googled and read about what it could be. with the characteristic and nature of the lump, i suggested it is varicocele. however, my recent concern is that there is a recent change in the behaviour of my penis. here are what i havenoticed:

1. i no longer have early morning erections
2. i hardly feel my penis bulge of late. initially i used to have little involuntary erections bout 4 or 5 times a day.
3. i find it difficult to go hard voluntarily (even with past erotic thoughts or fantacies). as before , the thought of previous romance or sex experience with my girlfriend can give me an instant hard-on. now, i have to stroke it with hand repeatedly for long before it goes erect.
4. though i havent had sex in a while because my girlfriend is currently serving in a different state. i masturbated of late and discovered my erection is not as hard as before, no pre-cum fluid as before, and the amount of ejeculation reduced dramatically
5. i sometimes have an uneasy feeling on my left testicle around the inner part of my upper left thigh

i dont know where all these is leading to. i gathered that varicocele has no effect on potency/erection, i can recall my penis was functioning normal even when i first spotted varicocele.

can you please advice me on this