good news/bad news

Went for my monthly checkup with the oncologist today. The good news is the tumor markers are down which means that the Ibrance and Letrozole combination appears to be working and suppressing the progression of the cancer. For now. He’ll send me for a CT scan at about the 3 month mark of taking the drugs to confirm. He won’t rely on just the markers.
The bad news is my white blood cell count is down. Right about where they would suggest a change in my treatment. Either a lower dose of Ibrance or a longer break after taking it for 21 days. Currently that break is 7 days.
The way he explained it to me is chemo kills the white cells but Ibrance just blocks them from being there. Usually the 7 day break lets them flood back into my system, but apparently not enough in my case.
He’s going to leave my drug regime as it is for another month and then re-assess if needed.