Do you think it's cheating??

So my husband and I have been married for a month now. For the last 2 weeks I have been having symptoms of a UTI and sex wasn't super comfortable and I didn't tell him until this afternoon Sunday because I know how much he loves having sex. I told him after we did because it was hurting worse than normal and I was in a bad mood because of it so I told him im gonna go to the doctor and we should wait for a little while. He works nights and the Monday morning his phone was under his pillow charging but felt too hot so I took it out and saw he got a snap and I thought it was from a friend who we were waiting to hear from and I opened his snap to him having friends a girl who takes videos of her masturbating and posts them on her story. Then I look and it shows my husband asking for more videos. To me this feels like cheating but he claims it isn't and im so lost and confused.