curiosity... before I confront him about Snapchat

I will try and make this as short as possible. 2 night night ago before bed I send out a  snap chat to few people including my boyf which his phone was next to me ish but I his phone didn't go off, which he recently turned his notifications off. 2 days prior I had this weird feeling in my gut that won't go away. He wouldn't open his snaps in front of me. Do you think he might be doing something he isn't suppose to? How do I confront him without sounding like I'm super snoopy?