If i get period blood on a part of my body, and i have herpes, will that part of my body get sores?

Usually not: If a person's first Herpes simplex infection was on her genitals, and she developed (and continues to have) a good level of protective antibodies against that strain of herpes, then she should not be able to get a new infection elsewhere on her body from that same strain of herpes. However, life is not 100% predictable, so nature might seem to "break the rules" sometimes.