Is he lying to me ?

So My partner has went out tonight while I'm 38 weeks pregnant with his mate to watch football which ended at 10pm.. he told me he would be back after it ( especially that I've been having pains all this day) he then txt me after saying he is going to stay for few games of pool and then be straight home.

( I had no problem with him being out, as long as he wasn't drinking - which he wasn't as he was driving ) but he asked me earlier if i wanna watch a movie together when he's back and that he won't be back late.. So yeah of course I was like okay.

But comes 12 and he isn't even home yet so I txt him saying night and he just says love you... like not even I'll be home soon or nothing.. I told him I'm annoyed at the fact he didn't tell me he was staying out out, and I thought he wanted to have a movie night together tonight. He totally ignored me and said he doesn't wanna argue ...

Anyway coming 1am and he comes home... with different top on ... :/

(Which he 1 , had a short sleeve top underneath a long sleeve jumper) so 2 layers...

Apparently he spilled Lucozade so he had to go the whole way to some shop to get a new top???

When he was telling me this he was like out of breath talking .. and when I kept questioning him about it he was like why why why you asking for...

Is this weird? Or am I just being paranoid ?

(Ps: I not long ago caught him flirting with a girl at work online ) hence why I'm questioning his behaviour ...

Edit ; I went and slept in another room as my whole chest kept tightening and I just didn't feel right. Something feels weird..

He didn't notice me away at all untill he woke to go to the toilet at 9 this morning..

He comes into me and asks why am i sleeping in here for , which I reply saying "just" and he's like but why ... and I said "I'll talk to you later I don't wanna argue " and his response is why what's wrong and I said " any time I wish to talk to you about anything you end up shouting at me so I don't wanna argue " and he just stormed off shutting the door behind him :(

I feel like utter shit right now :( I literally can't talk to him about anything. I have to keep all my feelings to myself bevause any time I do express myself and how something hurts me then he goes psycho at me saying I'm insecure, crazy, a psycho girlfriend who does this each time she doesn't get her own way, who constantly isn't happy. We literally just end up arguing so much each time I express myself that I'm so lost on what to do and say this time :(