[Acne] This might be a stupid question, but can I be genetically prone to have more acne on my left cheek than on my right cheek?

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If it's not that, then I have really no idea. I do nothing different on my left side compared to my right side, yet my right side has one or two pimples, and my left side is covered in them. I try to sleep on my right side as much as I can, and I change pillowcases every two days. There has to be something that I am completely missing out other than genetics, of course.EDIT: I didn't post my routine because it's not relevant.
Girls Blog 2015
Submitted by thisissomeaccount