I think he’s going through my phone?

After a long 3 1/2 year relationship that ended in 2017 we are back together. We’ve had ups and downs between long distance and cheating. He’s done hid a phone where he was talking to some other chick..etc. yeah we have dating history. & last night Iv noticed this a few times before as well that I’ll have notifications on my phone but they won’t be on my Lock screen. I had notifications from 2 hrs ago and at 4 in the morning I would check my phone and there would be nothing on the lock screen only on the notification bar that you have to slide down. Do y’all think he’s going through my phone or am I just trippin?