He gets a fever, he's back in.
The fever subsides. But while he's back for a routine check-up, it returns with a fury.
This is war.
Our team mobilizes. Trish goes to pack her bags for another week. I agonize while trying to put together another day at work, told over and over there's nothing I can do.
Every test he's had has shown that he has beaten his leukemia. From the very first round of chemotherapy to the latest tests on his bone marrow, all indications are that the bad cells are gone and his blood transplant has taken hold perfectly.
But the fear every time he spikes a fever, every time he shows even the most minor symptom makes us squirm.
Yesterday's re-admission to hospital wasn't just about fever. The doctor noticed enlarged lymph nodes and spleen. At first he thought it was mono - technically known as Epstein-Barr Virus (EBV). I was told it was probably no big deal.
Today he thinks it's post-transplant lymphoproliferative disorder, or PTLD. That's because Dominic's white blood cell count is high.
If you want to read up on PTLD, go to http://www.cancer.ca/en/cancer-information/cancer-type/non-hodgkin-lymphoma/pathology-and-staging/types-of-nhl/post-transplant-lymphoproliferative-disorder/?region=on. The gist of it is that it's rare and is related to EBV in patients who have had a transplant of any kind.
Extra white blood cells used to be good news when he was in recovery from chemotherapy. Now the fear is that they're cancerous again.
We won't find out for sure until the weekend.
We have to be brave and march on.