It's common to feel crummy during withdrawal. You are two days in on a process that usually lasts 3-5 days. It's normal to be tired or irritable. The brain is in overdrive, missing the alcohol's sedative effect.
Early recovery, after the physical withdrawal, can be a bumpy ride. Emotions can be all over the place.
Yes, it will get better. Give yourself more sober time. Two days is still in physical w/d. Give yourself a few weeks to feel the good of sobriety.