Same thing happened to me a few months ago.

I hadn't even noticed that I had nicked my blade on the faucet until I had a CLOSE look at 30x. There was the slightest little hook right on the edge of my blade.

I hone with a coticule and it took about 30 mins to hone out....then it took another 2 days to figure out how to make the blade sharp enough to shave with again.

Now I pay really close attention to that faucet!

Take a look at the blade with some magnification, I bet you'll find the culprit.