Girls problem to her partner

I'm on my 15th week pregnancy, I know my emotions are hightened because of this then suddenly I saw my boyfriend's phone with a lot of saved tiktok videos. The content were those sexy ladies dancing or showing their skin and boobs. I don't know how to feel, if is it okay and just let it go and ignore that I didn't see it? Because a guy would always be a guy but I can't stop thinking, feeling jealous, insecure and so on. I don't know if it is right to confront him, he might tell me na ang babaw ng dahilan q, na it is just some kind of video. Can someone help me please 🙏