No redness or visual signs of infection

I am 2.5 weeks post op. No redness or visual signs of infection. My knee (that had the acl recon.) is significantly hotter than my other knee. I am feeling a bit more sore than 'normal. Is this something to be concerned about or common?

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  1. Fibroid
  2. HERPES 1/2
  3. Diabetes 1/2
  4. Lymphoma disease
  5. Hepatitis B