Unusual shedding after a hair transplant (photo)

So I had my hair transplant done on Jan 2nd. I had virtually no shedding in the past 1 months but I started using topical Minoxidil a week ago and all of a sudden got dandruff in the transplanted area. My doctor told me to scrub it off and I did and gave him some after pictures with some hair down the drain. My questions:

1. I did this after 4 weeks. I was told it takes 2 weeks for the hair to root. Did I accidentally peel off some hair or was the shedding at the same time?

2. How do confirm what I shed was legit or I accidentally messed up transplant?

I’m worried. I have had no problems so far and was going so far with maybe a hair or two in the drain. Pictures attached! If it’s just shedding it couldn’t have been timed worse. Stats: 2100 transplant count Age: 36

Scrubbing your transplanted area after 12 days will not cause loss of the implanted hair stem cells that, I expect, will eventually grow. Starting minoxidil could induce some shedding, which tells you that the drug may be working to develop new hair in the non-transplanted areas. I believe that you don’t really have a problem.