HI,
Can you elaborate on the bumps? The big bump could be hair follicles and sebaceous glands which are a normal part of the skin's anatomy and are commonly found on the penile shaft, particularly on the underside. They may be visible as small nodules or might only be felt as small lumps in the skin. On the other hand, the small bumps could be Fordyce spots or milia. Fordyce spots are small papules that can appear on the glans, shaft or scrotum and usually affect younger men. They are painless and not itchy and are not infectious. Herpes are usually the blister-type bump. If it persists or other symptoms arise, have this evaluated further for proepr management.
Take care and regards.
Dude, I'm no expert, but it sounds like herpes or warts. You should definitely see your doctor and don't have intercourse until you do.