Genital warts and genital herpes: how to differentiate between them?

Genital warts and genital herpes: how are they different in appearance? I had two red, small bumps on my penis that look like acne or pimples but cause no pain or itching. I googled and found that those bumps are really similar to genital herpes, however, they are so hard and tough that could pinpoint genital warts. I'm so confused but cannot come to the doctor until next Tuesday. Help please.

what is the outcome from your appointment?