The area around the scars under my breasts are sensitive. Is this normal?

I had a breast reduction 3 years ago. Everything went well, the doctor said I healed properly. But I have sensitivity around the scars that are under my breasts. Is this normal? Its not painful, its just a weird, uncomfortable feeling. And I have a small bump in each of my breasts around the sides. They aren't painful, they're just there. Please help!

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