Mom needs a break

I am just stuck and i need to make sure I’m not wrong for how i feel. I am currently in my first semester of nursing school, working part time, while taking care of my almost 2 year old. My 2 year old will go to daycare during the week while I’m at school and on the weekends he will go with Dad. Dad and i are together but we currently don’t live together we still stay with our parents till i graduate and until he figures out his career because it’s easier that way. Am i wrong for needing a break? This weekend i decided to stay home because earlier in the week i had a mental breakdown and i just needed a couple days by myself to regroup from all the stress that i have on myself. With that being said Dad only works 8 hour shifts and has the rest of the day off during the week to do whatever he pleases. He’s trying to make a big deal about him needing a break all of a sudden and i don’t understand why he would need one when he has all the time in the world by himself to do what he wants to do. It bothers me because it makes me feel like he doesn’t truly understand what i have to do during the week and how much stress it puts on me. i don’t want to sound selfish but i truly don’t understand how does he need a break when all he does when he gets off is play the game and sleep. He can literally sleep when he wants eat ALL of his meals shower whenever he wants he can literally do WHATEVER he wants . Like how much time do you REALLY NEED?! I am sorry this is kind of long but someone PLEASE tell me if I’m being selfish or overreacting .