Implantation bleeding?

Sarah • 3 pregnancy loses. 4 failed IUIs, IVF with 1 failed frozen transfer and finally have our healthy boy!! Momma of a 3 year old, angel twins 10/19, and successful fresh IVF is giving us boy two in November!
Ladies, could you tell me your experience with implantation bleeding? I have heard some people say theirs was a pinkish color. Others say brown. Some have said they thought it was their period... I had bleeding for 3 days.. Not very heavy, not like my normal periods. It was super early in my cycle to. I average 38-42 days and this happened CD 25-28.