Overreacting or would you be upset?

Would you be mad if your SO went out after work and got some beers with a buddy from work? I don’t have a problem with him going out, it’s the fact that it’s almost 3am when he gets home. His shift is 3pm - 12am, I’m like what’re you doing after 2am when everything is closed??? He said they just hang out in the parking lot, he isn’t tired and I’m just sleeping so he doesn’t think it’s a big deal.

I get upset because I’m 34 weeks pregnant, I have to wake up at 5am to get ready for work and get my 5 year old up and ready. When I wake up at 2:45 and he isnt home I get pissed. To me it’s just disrespectful - we’re not roommates he’s 6 years older than me and you would think it would make sense to him. Am I overreacting or does he need to get his priorities straight??