Suspicious

Hi ladies,

I have a question and it's regarding my boyfriend. He's actually away for 2 weeks he's on a trip. I don't know if he might be cheating or he doesn't love me no more. The day before he was about to leave he jumped in the shower and he left his phone outside and unlocked. I grabbed his phone to set up our picture as his wallpaper when I was going through hes picture's he had screenshots of girls. At first I didn't say nothing but I felt bad. So, I ended up telling him about the pictures. He got mad and told me that why would I go through his phone. I told him to set up our picture. Then he said " if you want to think the worse go ahead". Now that hes away he hasn't message me at all . I'm starting to worry if he might be cheating and met up with someone on his trip. I need help. I'm 22