Perhaps your bad mood was not only because you were tired, but also because you were hungry @hanna716 :D - I know that I get miserable when I am hungry... and we have an expression for it here... not sure if you use it there too "Hangry" haha! (Hungry and Angry is essentially what it means, lol)

and I hated myself for that since I am treating my mom with such attitude. Which by the way she seemed to understand as I was drained for the whole day review.

Moms are amazing that way, aren't they! But then again, they are our rocks and it seems to just come naturally to them - I know I am the same with my son :)