Idk what I should do

Okay last night my husband and I was hanging out we both got up to get a drink his phone was in the kitchen he picked it up and it came across he had a message... I asked who it was he said it was from me which this morning while he is sleeping I went throw his phone which I haven’t done in a very long time... the message from me he replied to... which wouldn’t show on an iPhone new message on the main lock screen... I then went throw his internet history it had only last nights stuff which it should have had more then what it had... I wanna say something but I feel like I’m overreacting...

But am I???