Go away!!!

Had an awful day. My partner quizzed me last night asking what was wrong because I have been behaving oddly. I thought I was doing a really good job of hidding it!! Obviously not - tried to gloss over it saying I was just a bit tired but she didn't buy it. Then today at work my boss said i was acting weird and that I seemed aggresive yesterday, he thought it was unlike me and was expecting me to pick a fight with some1. The worst thing is I work with my partner and she was stood there at the time and heard it all. Now shes on her high horse saying that it was proof that she's not imagining it and if my boss has noticed i've got to do something! I'm not aggressive just frustrated with myself but I can't explain that to her - she never understands how i feel inside - aaarrrgggghhhh i'm trapped fighting with myself and wishing everyone would stop picking holes in me!!