Am I being unreasonable here?

I (21F) have been with my bf (23M) for about four years now.

A couple of nights ago my bf came home late after he got a call from a friend. He didnt tell me what he was up to or where he went, and didnt answer the texts I sent him while he was out. (It wasnt aggressive or anything either, just a text saying “i love you!” and another one asking how he was). When he came home, I asked how was the hangout, what they were up too, stuff like that. He just brushed it off by saying “friends, we just talked”. I asked if they wanted to hang out together next week, and he seemed kinda annoyed and said we’d talk about it in the morning.

In the middle of the night, he starts violently vomiting and it reeks of alcohol, so hes clearly been drinking. This confused me, as I have zero issue with him drinking normally, but it just seemed so strange that he was trying to hide this from me. I asked him why he didnt tell me, and he brushed me off agian by just saying “yeah I drank” and went back to bed. He rarely goes out drinking.

The next morning I said that we had to have a talk. I wanted to know what was happening and why he was being so weird. He has cheated on me once in the past, so I feel like I was understandable in my concerns. After repeated questions about what happened, he eventually told me that he was only hanging out with one person, another girl. Ive never met her before, he met her recently and theyve been hanging out quite a bit together since theyre from the same country. Last sent they spent four hours drinking gin in the park together. Normally this wouldnt bother me, but the fact that it seemed like he was trying to hide the truth made me extremely suspicious. His excuse for cheating on me two years ago was that he was drunk and stressed. I tried to explain why this was confusing to me in this context, and he completely ignored that. By this point I was a bit hurt and angry about how dismissive he was acting, so I grabbed my backpack and said I was heading out for the day to think and call a friend.

Its been two days since then and he’s made absolutely no attempt to contact me or follow up. Not even a text asking if I was alright, where I was, or if I wanted to talk. I dont know why, but this hurts the most. I feel really weird about wanting someone to check up on me without me asking, but I also feel like he should? Idk, even if Im going psycho and my suspicions are completely unwarranted, I just feel like my partner of four years should be putting in the effort to just ask if I was ok. We didnt get into a screaming fit or something either, I just said I needed to head out for the day to think. Idk it just feels like he doesnt give a shit about me, which certainly doesnt help my suspicions about him cheating either. Honestly even if he didnt cheat, the way he’s been acting really hurts and idk if I wanna continue this relationship.

TL;DR. Boyfriend came home very drunk and was extremely cagey about telling me where he was, who he hung out with, and the fact that he drank. After further questioning, he was drinking with a female friend he just met alone for four hours, which made me suspicious as he cheated on me before. I left apartment to think, its been two days and he hasnt put in any effort to contact me or see if I was ok. I am hurt by this.