What is going on with this fly bite?

I went to the beach. The day I left what seemed to be a standard house fly landed on my stomach and bit me one inch from my navel.

It didn’t swell up or anything. Now as the weeks have gone by, I must have irritated the spot, and it is like scar tissue. A one millimeter bump. It has no color, it sort of looks like a pimple without a head. There doesn’t seem to be anything in it. It’s small.

Should I just ignore it? I haven’t even put any antibiotic ointment on it. But I don’t like it. Especially since it was a fly bite. Thinking about going to buy some wart remover, or something.