Irritability and your SO

I am at the tail in of my TWW. My biggest symptoms are being tired and irritability.

I slept ten hours last night. All I did today was take a bath and read, but around 4 o'clock I felt exhausted. I decided to take a nap with my SO. I slept until 7:00, and woke up so exhausted that I felt as if I couldn't move. And I woke up irritable.

It seems like he didn't have to do much to set me off. I know I was in the wrong, but I was so angry.

My question is this: how do you deal with your irritability? When you realize that you are being silly, how do you make it better? How do you calm down from your annoyance and irritation?

I tried deep breathing and apologizing, but he was upset with me for acting that way. I could see that he was mad at me. He didn't get over it and calm himself like I did. Which brings my anger back in full force.

This is a new thing for us (I've never been irritable before my period and in the tww before) so I really don't know how to handle this situation.