Right ear sore/congested?

Kingston54

Not sure what to make of this but for the past few days I've been extra congested although I've been congested in general most of the pregnancy and my right ear is sore off and on. Mostly hurts when I bite down. I don't feel sick, just the normal end of pregnancy stuff :

Any thoughts? DH said maybe a sinus infection but I've never had one so I don't know what it feels like...