Corolla DTR Low beams stopped working

2001 Toyota Corolla.
Just happened that both low beams stopped working.
High beams still function
It is unlikely both bulbs went. I checked fuses that I know of: 2 red
10's in the forward fuse box.
I have two guesses and would rather narrow it down to one, or even
know if it something else.
I think it could be the Dimmer relay ($75 item) or the headlight
switch.
Anyone had this problem?

Thanks