Wild mood swings

Hey everybody, got a little problem that's bothering me. I'm about 2 1/2 weeks in now, been doing good other than the occasional craving. The last couple of days, especially today, have been different. Instead of having a flatline, I seem to be doing the exact opposite. Little things real torque me off, stuff that didn't bother me when I was actively doing PMO. The anger doesn't last long, only a few minutes then back to center. Also, things I didn't find particularly funny (or aren't funny at all) before will have me laughing like a braying donkey. Same thing there, a few minutes and its back to center again.
Another thing, stuff I have always thought was funny, movies as an example, just don't do anything for me. I watched Blazing Saddles the other day and basically couldn't have cared less.
Most of the time my mood is basically neutral, but when it isn't, it is either one extreme or the other. If it wasn't for the periods of neutrality, I'd think I was bi-polar.
Any advice?

 

Thanks, I thought that's what it might have been but wanted to run it past others with more experience. Guess I'll just sit back and enjoy the ride for now.