had a BR 3 weeks ago, I’m still in the healing process. I have some weird bumps in between my breast, will that go away? (photo)

The extra tissue or "dog ears" will definitely flatten and improve with time. If there is any residual excess tissue after full healing and maturation, it can generally be removed as a simple office procedure. 

Dear bbarba9499,I understand your concern and it is quite normal to be concerned about the outcome following a breast reduction surgery. However, you are still in the very early stages of the healing process.Your will need to be patient at this moment and follow what your surgeon has instructed you to do post operatively.At the early stage of the healing process, the tissues are still swollen. Once the swelling subsides  you will be able to see the final result of your surgery.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

and I appreciate yours.  Will it be there in 6 months?  Perhaps but there is also a good chance it may diminish adequately so that it won't be as concerning to you.  Regardless of what happens, minor office revisions will resolve this for you if it doesn't resolve on its own.