I agree with others that this sounds like it could be because of your job. I'm also wondering if you're on birth control? A couple of years ago I was on the pill. The pharmacy I was using stopped selling the brand I used and gave me a different brand that they claimed would be the same (this actually happened twice in a couple of months). I started noticing a lot of the same symptoms you described. I felt dulled, like I was continually cranky and could hear myself being mean to the people I loved but couldn't stop it. After my prescription ran out I delayed going to the OBGYN so I could get it renewed and eventually started feeling more like myself. I noticed myself almost coming back alive in a way. This may not pertain to you but it is something to consider. Try to do the little things that make you happy. Spending time outside may help (most people don't get enough vitamin D). Most of all just keep pushing forward, even if it feels bad now it won't always be that way.