Help me explain

My son gave up breastfeeding cold turkey about a month ago. Since then I have been having a few side effects.

I wouldn't say I'm depressed but I am having a few quick mood swings. Fits of frustration that I use to be able to deal with.

The problem is... I have had zero! I mean zero! sex drive. My husband is getting impatient. I just really don't want to!

I am trying to tell him it's a hormone thing and it'll figure itself out soon. Maybe I'm wrong but it's the only thing I can think of.

Let me know what you think/know about it.