I have a red small bump on my penis. Is this an std?

Maybe. . Have your doctor look at it to determine if its an std, another problem, or a normal penile pearl.
Possibly. Any time there is question of whether a skin lesion on the penis is an std, it must be seen and evaluated. Not all skin lesions are std's but visual inspection is very important in addition to clinical history. Also, some skin lesions may resolve spontaneously and are an std, making one believe that everything is okay.If there is a chance it may a sexually contracted lesion, it needs to be checked.