Did my bf cheat on me or am I in my head?

Gi

This is a very new relationship that I’m in we have been dating for 2 months now.. ( I’m 25 f and he’s 28 m ) first let me start by saying I am not the jealous type at all, never have been and even if I do feel a little jelly I will never show it (idk if it’s an ego thing) anyways .. he was on a 3 night bachelor trip with 10 other friends and the first 2 nights he was calling and texting me just saying how much he misses me and how much he loves me (drunk calling expressing his feelings towards me) and I thought it was super cute and nice, I didn’t tell him to do this either, he did it on his own) BUTTTT the last night , he called me at 12 once and I was kinda expecting the same energy he was showing the first two nights but it was different. He didn’t call or text at all till 9 am the next morning saying he got no sleep and how tired he was and that they went to a strip club. I was half asleep so I didn’t really care or say anything. But then when we talked again it was just kinda off and I don’t know if it’s bc I’m in my own head or bc he’s acting different. I went to his house and asked him if he did anything and why he didn’t call or text me nonstop like the last 2 nights and he just said that he “forgot” and doesn’t know why. So I just said ok.. I just found it weird idk if I’m in my own head and being insecure or what. Then he saw I was on sc and asked me “why I’m talking to all these guys” (I’m a hairdresser and most of the guys I talk to are clients) I told him that he can go thru my phone if I wants bc I have nothing to hide and the other guys on there are fiends from hs and that I’m not flirting with them. And he got all weird saying I need to stop replying to ppl from hs. He got weird bc I didn’t save the messages. I told him if you don’t trust me then this isn’t gonna work. Idk what to do or think. The whole time I was there it was off be he also was very tired so maybe that’s way too? Idk what to think pls help and give me ur take.