I think he is cheating

I think my husband is cheating on me ....

I worked this morning and was tired after work so I took a shower and just went to sleep I woke up and my husband was gone for a “Walk” like was like a hour ago I found out he left he’s still not back and I don’t see how he’s gone for a walk when it’s really cold outside ... he has had a pass of cheating but I thought things was better or maybe I’m over thinking it I went out looking for him I couldn’t find him