grrrr. You know, I had a female doctor for a while (different than the one I see as MD) and I was seeing her the same time each month lol I changed the week I saw her and she was fine! Now, I know men have a cycle too... not quite the same but really! I would certainly mention his grouchiness next time if he is, ask if you can help in any way (of course you can't in his eyes, but he might feel better for your asking?) He needs to know if he's losing patients over it,imo.

I hope he brightens up, for you