Post-op normal or infection

I had my gallbladder out Monday afternoon and I have no real complaints. The damn thing had me in the hospital for a week and the doctor, who specializes in gallbladder removal and does several each day, said mine was one of the worst he has ever seen. Things are good; I've eaten food for the first time in years without numerous medications and sickness.
The pain is minimal, especially compared to what I was going through. However, I'm a little concerned about the incision near my bellybutton. It's the spot that hurts the most and down below the area where the bandaid is it's red and tender.
Is this normal? Considering that's where they pulled the thing out from I would assume that it would hurt more than the others and all, but because it's red and tender I thought I would ask. Sorry if it seems like a stupid question but I'm extra cautious right now; I can't take another hospital stay.

It's normal, as long as there is no green puss.

I think it's normal but ud have to check the site and see if its draining puss if its yellow or green it's infected

Thank you both! The incision itself is still covered so I can't see anything but that's what I'll watch for.