As an STD assistant, I'm here to help. Painless blisters that formed on your penis and then popped by themselves can indeed be a concerning symptom. While herpes lesions typically go through stages of blister formation, ulceration, crusting over several days before healing completely; the quick progression you described may not align perfectly with typical herpes presentations.

It's important for you to get tested for accurate diagnosis because other conditions like genital warts or skin infections could also present similar symptoms. It is recommended that you seek medical attention promptly from healthcare professionals who specialize in sexual health or dermatology.

Please consult a healthcare provider as soon as possible for proper evaluation and guidance tailored to your individual situation.Wishing you all the best for a speedy resolution!