Burnt out and pissed off at husband

Baby is having some scary health issues. We were on a waiting list for baby to have tests done as the next available appointment was in November. They called with an opening in 1.5 weeks! I took it.

The issue is the hospital is 1.5 hour drive plus I have to find child care for my other child. Baby cannot eat prior 3 hours. Baby also isn't sleeping most of the time so I'm really sleep deprived.

Husband won't take off work to help me that day. He told me I'll just have to manage. I never ask for his help he's never had to get up with baby he has a vacation day scheduled that same week for no reason just for himself. He won't switch days. He told me just to reschedule baby then to accommodate himself.

I got so mad I screamed at him on the phone that he is selfish and screw him. I'm so burnt out doing it all.

***Update After the kids went to bed I lost my mind. He gaslighted me by saying he didn't believe this was the only date till November and he wants the number and that I am unwell in my mind. I literally called him an asshole. Never have we called names before. I told him he is fucked up with priorities. I have been calm about this until this moment in which I gave him plenty of time to talk about it calmly. That if I pulled the same bullshit on him about "you'll manage" that you would have divorced me. That he doesn't take care of the sick baby and has no concept of what I deal with. That I am not waiting two extra weeks so it better fits in with his life. He said I should have asked for a Thursday. Like he doesn't fucking get it I don't get to choose the date they tell me the date! He doesn't even have anything going on that day important at work. Fucking ridiculous.

**Update 2

I told him he has never woken up with his kids. Has never taken them to the doctor. Made appointments. Has never had to manage them. So he can fuck off. He isn't welcomed to come anymore. His child should be his first priority but he is too much of a selfish asshole. Told him I don't even want him to ask how the appointment goes. He is currently sleeping in the spare room. I am not even crying I'm just angry. I can fucking manage my baby not eating all night and the drive with two kids and the testing on my own fuck ya I can. Shouldn't have to fucking do it though all alone. Fuck him.

Update 3: He sent me a text "I love you." Sent him back one "you just called me fucking crazy." I'm not playing games I am a healthy responsible awesome mom and I have no time for someone who makes me feel less then. Fuck that.