Today Is Not My Day To Deal With Humans

Everyone's allowed a bad preggo day. This is mine. We canceled our vacation for next week. I'm bummed. We didn't know we'd be pregnant so my husband is saving his vacation time for the arrival of our child and ultrasounds he wants to attend. I totally understand. But the trip was a gift. Someone owned a time share and gave us a week at the resort. We can't afford most of what's there, but it was a week away. When the time comes though, I'm gonna be glad hubby has the time to spend with us after the birth. 
Because we aren't going on vacation which means no indoor water park, playgrounds, and such, I'm feeling a little guilty for my son. I planned on taking him to the children's museum today. Mommy son date. And we've never been. 
I so thought today was Tuesday. It's not. It's Wednesday. And for whatever reason pregnancy fatigue has kicked into overdrive. 
I feel like I can barely put one foot in front of the other. And I have a class to teach on Wednesday Nights so traveling to the museum isn't possible. 
In my tired nauseated state, I've been snippy with my spouse and just annoyed. I shouldn't be, I know. I had to rush to the bathroom this morning and I heard my son screaming and crying from a tantrum that caused him to be really hurt. My husband ignored our kid. And I couldn't get out of the bathroom. I had to yell for my husband to get to our child. I realize my husband was ignoring a tantrum, but the tantrum resulted in a real injury. Mom's can hear those changes in crying. When I finally got out of the bathroom, my husband hadn't even checked to see where my son was hurt. He's fine. He's got a bruise from throwing himself on the floor in a hissy fit. Which of course we had a chat about why tantrums aren't okay and he can and did get hurt.  
I know my husband is frustrated that I'm not cooking dinner due to puking and food aversions. The first trimester doesn't last forever and he doesn't complain, but I can tell his wife being exhausted and the house being a wreck and there not being a decent hot meal for weeks is annoying. And me walking into a room and running to heave is getting old even with the nausea meds. Hey, I'm annoyed too. I am a perfectionist and I want the house clean and healthy meals on the table and I enjoy taking care of my family. 
But today, I can't seem to say anything right or do anything right. And it isn't one and I'm day dreaming about my bed. Just not my day to deal with anyone. I know I'm hard on myself. Just a bad day.