Folliculitis. Can you please advise?

I've been having some blisters continuously disappearing and reappearing at different spots on my penis and testicles since 1 month or more.They itch a lot and are growing in size too which got me worrying more.At first I thought of it to be some kind of fungal infection so I applied anti bacterial,anti fungal creams but it didn't gave me complete relief.Also recently I've become sexually active too and this(blisters thing) has been happening few months after that so it is also one of my main concern.Also I've never seen such condition with me till now. I've also consulted a urologist as I feared it to be somekind of STD but he told that it was a case of folliculitis.But that was 5 days ago since then the no. of these blisters increased rapidly and are now all over my testicles.The itching has also been itensified. Can you please advise?