Am I selfish... Vent...

Am

My husband's mom wants him to go to cedar point (amusement park in our state) this Friday or next, but he would have to take an unpaid day off work. And he's seriously considering it... I'm not getting paid right now because I'm on unpaid medical leave until my doctor's office gets their paperwork in order. We are already behind on bills... Am I selfish for being mad that he's even considering it... When I was working if I didn't work overtime (even while pregnant) I never heard the end of it from him and his family... And now they want him to take a day off unpaid while they already know we are behind and he's always been afraid of failing them... What do I do...