mama ... sorry you have to make this decision
If it were me, I guess I'd avoid FluMist at all costs, and go with the shot. I guess. I might develop a sudden, previously undiagnosed allergy to eggs. Or a sudden history of Guillain-Barre.
From the FM package insert:
"Therefore, as some viruses are excreted in human milk and additionally, because of the possibility of shedding of vaccine virus and the close proximity of a nursing infant and mother, caution should be exercised if FluMist is administered to nursing mothers."
Of course, to most doctors, that means "Oh, it's fine
!", but you know. Caution.
With the shot, it's important to know exactly which one you're getting. There are several brand names, and the ingredients may vary slightly. The multi-dose variations can be of the brands Flulaval, Fluvirin, and Fluzone (multi-dose vials usually have to contain preservatives, whereas single-dose vials usually don't). Fluzone (Sanofi Pasteur) and Fluarix (Glaxo) come in single-dose versions, which, if you have to do it, would probably be the way to go.
I guess I would find out which shots they have available, and tell the doc you can only receive Fluzone or Fluarix single-dose, preservative free versions. They should be able to get their hands on one.