Mole Removal scar appears bigger and slightly red. Is this normal? (Photo)

I had a mole removal in 2012 on my mid back, under were a bra would rub. The scar (Ithink) has grown a little larger and now seems a little red. Could this just be from rubbing of clothing or bra? I am freaking out about melanoma even though it is unlikely. Mole was benign as far as I know. Please let me know if this looks normal or should be further evaluated. Thank you so very much.

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