Sketchy husband

So my husband and I have been fighting a lot during this pregnancy, everything I do seems to be a problem and I can't seem to fix it. I'm also battling depression while pregnant which is making it hard for me to even want to try and make things better. Recently I saw a dick pick of his that uploaded to our screensaver through the cloud. He claims that he "doesnt remember taking it, he thinks he was going to send it to me but decided not to". Well I snooped and found the date he took it and when he deleted it, which was while I was at work a day or two after one of our big fights, which included the topic of him not wanting to have sex much anymore. I don't want to assume the worst but I can't help it. Does it seem like he's sending these to someone else?