Best wishes! I was a preliminary marrow match a year or so after donating my kidney after ~25 years on the marrow registry. I wasn't a full match, or there was a better one, or the patient no longer needed treatment, which was surprisingly disappointing and remains mysterious. They are still very rigorous about anonymity for marrow donors and recipients, including potential recipient condition.
There was significant correspondence between several of us here and the senior management of the NMDP several years ago when they summarily excluded living kidney donors as marrow donor candidates. This policy change was eventually reversed, based on the lack of any nephrotoxicity identified for filgrastim. Rob and I met the NMDP Medical Director at a forum in Boston, and he was noncommittal about the issue.
Definitely keep your primary care physician informed, and consider letting your transplant center know. There may be new data on this, though I haven't come across anything in the peer reviewed literature. Do let us know what you learn and experience along the way!