K.E.
awh poor baby, it sounds linke an inner ear infection, antibiotics and hopfully the pain will subside with in 3 days.
The way a baby's ear cannal is angled is that any sinus build up it flows into the ear cannal, bad design I know but there must be a reason for it ( I don't get it but...)
So happy to hear you got baby looked at, you are on the road to recovery then. Good Luck.