Advice and opinions please

Boyfriend deleted baby mamas text messages between him and her. For some reason this weekend I have just had the worst gut feeling. I am currently 5 months pregnant so I didn’t know if it’s just my anxiety. But I decided to get on his phone and he deleted all of the messages from Saturday. I could tell because they weren’t adding up. Nothing else has that he has done has really been sketchy I have just had a bad feeling which made me decide to get on his phone. I really don’t feel like saying anything to him because it’s gonna be a huge blow up from him.