Touchy subject

How do I bring up the conversation to my husband about staying home more/not going out with his friends so much ? I don’t want to seem controlling, but I do want him to understand I am pregnant, tired, and sometimes just need some help with the baby. I also don’t like when he blows off our plans we had so he go out with his friends. I am 26 weeks pregnant, and we have a 2 year old. I know he needs time with his friends, so I am in no way trying to say he can’t go out, but there is sometimes He doesn’t even see his son from the moment he wakes up in the morning, to the moment I put him to bed at night. I was really looking forward to him coming home from work so I could ask him to watch the baby so I could get a hot bath, but he just texted me he is going out after work, so he won’t be home until late tonight. This seems to happen more often than not these days, and not only am I jealous he gets to go out, but it kind of just sucks.