Needing to vent!

After a shitty night's rest, a busy ads day at work (childcare) with a shift that ended an hour late I come out to find my husband waiting in his car only to be yelled at. How the fuck can I leave when we have rules about all ratios being covered before staff leave and parents not picking up kids till late. I couldn't let him know as phone's are not aloud in the rooms and have to stay in the staff room and I couldn't leave even for a moment as we had way too many children. It's not my fault that this happened yet I still get yelled at for it. It left the car while parked in traffic at the lights so I had to get out and swap sides and do an illegal u turn just to chase after his stupid ass. I'm already stressed enough as it is and don't want to have to deal with him threatening divorce and leaving me stranded. I just want to scream and cry and just make it all stop. Why is it always my fault when things like this happen.