I'd start by saying that you are very, very early in sobriety...still potentially in the initial/acute witdhrawal phase. It's very common for your emotions to be all over the map during this time....so the highs and the lows will be exaggerated. If you are physically able to make it to work and make it through the day consider it a victory no matter how "bad" the day goes.
It sounds cliche, but it's going to take time to normalize. A lot more than just a few days. Maybe the job is not the best one for you, and you can certainly make that decision down the road...but it's way to early to do so at this point in my opinion.
And lastly, remember that all jobs have stress and tasks that you'd rather not do...but that's why they pay you to do it, right? ;-)