There are many things that could cause an ear lobe to swell and feel like it has a fever. Just being irritated can do this.
nothing
Yes
It depends, you could be pregnant.
The Parotid glands are about where you describe. They are salavary glands and they can swell. If both swell it is usually from infection. One can also get stones in the ducts that drain the salavary glands. A stone would block the fliud and cause it to back up and the gland to swell. At CT scan would determine if there is a stone. Hopefully it's not mumps.
Taking any medication can cause your eyelids to swell and itch. All medication has side effects and this could be one of them.
you could be allergic to something. go to the doctor.
Infection
Pregnancy may cause your feet to swell.
A retainer can in certain situations cause ear pain. This could be the case if the user grinds teeth for example.
It could swell and cause your stomach to explode.
If your dog has an ear infection it definitely could cause his eyes to be swollen. Infections can travel if not treated.