Sick baby

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My son just got diagnosed with an ear infection and we fly out tomorrow we’re flying a total of 8 hours with 2 layovers. His doctor said as of now he should be ok to fly but if his symptoms get worse then it’s up to me if I should have him stay back home with a family member. I can’t cancel this flight because we’re going to see my husband graduate from Basic Training and everything is paid for already. So I just want to know if any of you mamas flew with a sick baby and how well did it go?