Was I Wrong?

This evening, my boyfriend texts me while I’m at work saying “We’re going somewhere after I get off work” ( He gets off at 6:30pm). I ask him how long he’d think we’d be out, (but not refusing to go) because I need to finish my lesson tonight and study and take an exam before having to pick our son up from daycare. I get off at 2pm, usually 12 but in need of some extra hours because I missed a day last week and daycare pick up is at 4. He says we won’t be out long, I say okay. He comes home, changes, and we leave. He pulls up to a bowling ally, I’m already tired because I had to rush to finish my lesson, prep for dinner because I didn’t know what time we’d be back, and also try and keep my two year old entertained. When we went inside, there was a line, he noticed my face and asks if I’m okay, I kind of jump and say “no, I don’t really want to be here, in super tired .....”. So then we just leave. He hasn’t spoken to my since we got home. I feel bad but at the same time I’m almost 6 months pregnant, our two year old barely sleeps at night because we’ve taken his paci, I work full time, work on my pharmacy tech certification online, clean, cook, and take care of our son. I have little to no help with him at night when he’s home, I keep the house clean, and I cook. I’m constantly tired and I continue to tell him this but he never really listens to me. It’s frustrating, though i still feel bad.