I’d also suggest you speak to your insurers as I’m pretty sure if you travel with medical approval it will exclude any injury Or complication arising from this and if you are going to the USA that’s going to be telephone number medical bills.
if you don’t declare it to your insurer and you have your luggage lost or need to claim on an unrelated matter say you are hit by a car then pretty sure non disclosure would exclude cover for that as well.
Personally I’d postpone.