Is it normal to have red blotching (not bruises) to breasts 6 days after having a fat transfer to breasts?

You may have some inflammation, but not infection, in the red areas. However, do let your surgeon check you to make sure there is no low grade infection.

At this point in your recovery, redness and swelling are to be expected.  Infections following fat grafting are unusual and you have probably been on antibiotics for a week.   As a nurse, you know that if the swelling and redness progresses or you have fever or pain, contact your PS.Kenneth Hughes, MD, ABPS Board Certified Plastic SurgeonLos Angeles, CA

Thank you for your questionWithout a picture it is difficult to assess if infection, inflammation, bruising....I strongly recommend you follow up with your surgeon for a in person assement.Best Wishes
Dr Genevieve F.Caron, Board Certified Plastic Surgeon
Montreal, Canada