I'd call that a win -- I mean, if you're going to get the flu, better two weeks before the trip than *during* the trip.
I agree. As someone who got the nasty cold from hell (I've had the flu, it wasn't the flu, though it was weird and long and bizarrely emotional and so much worse at night) while on our trip and alone with DS for 2 weeks...I'm glad you got it now. You'll likely be exhausted at the start of your trip, and do be aware that an ear infection has been following along with this cold, but at least you'll have most of it done beforehand.
Anti-virals are weird. Have you seen the BIZARRE list of side effects? And of course "side" effect just means "effect we didn't mean to happen". I mean, behaviour stuff, etc? WEIRD. It's best that you couldn't take them. Really.
Not to mention, I'm starting to think that it was a bacterial thing in the first place. Of course can't call it a cold then, nor flu (even with our loosey goosey way of using that word), and doctors would actually have to do some work to figure out what it is, so they won't say that, but it just felt bacterial to me...
Elderberry syrup, vitamins, rest and sleep, honor your body and try to rest it, honor those around you and stay home as much as possible (or wear masks in public so people know to stay away from you if you're medicating), more elderberry syrup....