Advice please..possibly cheating..

So my husband and I haven't been getting along the past few days. Today we had a big fight all day he didn't even call me at all on breaks how he normally does. He normally gets off work at 330 am or so. Today he decides to tell me he's working until 4am or later and some guy is bringing him home. I offered to pick him up but he said he don't want to see me. Well this guy was supposively bringing him home and I said well I stay up late so I don't mind waiting. He said he didnt want to see me still. So I said your coming home you will see me anyways. Then all of a sudden he says fine I'll go to my moms.

A few months back we went on a seperation and he had gotten a fwb at work. He claims he no longer associates with her but something about this story doesn't seem right to me. My gut is telling me something different and I was always taught to go with my gut. Anyways I had told him pretty much him showing up at such an hour they will wonder why he's not going home which means to me he is going to involve them in our issues. He said they won't know anything, but he has never pulled this card on me and to my knowledge he has never cheated on me. But...I'm suspicious now and idk how to feel bc I don't have any actual evidence. I know you guys can't tell me if he is cheating or not but if you have any input feel free to leave a comment but I needed to get this off my chest bc it's really bothering me.