Should I be concerned? 🤔

So, I've been recently seeing this guy, spending a lot of time together, always texting/talking, great connection and great sex, etc. We both just got out of year-long relationships and agreed that we both wanted something light and flirty. But still, he often talks about building to a serious relationship and how much he cares for me. I have started to really like him but there is one small thing that is concerning: his ex. She's not in his life that I know and we don't usually speak of each other's ex. But he still has stuffed animals and cards from the relationship in his room. The first time I saw them he said that he'd take them down and even throw them out bc he could understand how I felt seeing them there especially when they're right in my face during intimate timing if you know what I mean. But he hasn't even put them away. He tried moving them out of sight but they are still very present. The last time I was there I discovered a love note from his ex on his dresser and he has his stuffed animals between his bed and a wall so every time I roll over I see them 🙄. I wouldn't want someone having to stare at something my ex gave me every time I came over. It's making me feel like there could still possibly be something for there her and I don't want to move forward into this just to catch feels and be disappointed. It wouldn't bother me so much if he hadn't said that he would put them out of view in the first place and most guys don't have a problem with throwing away old shit like girls do so I don't get it. And I don't want to ask him more about it because I'm technically not with him yet and last time I asked about a girl he used to mess with he told me I was tripping. Should I feel this way or be concerned?EDIT: So I have more to add to this story that is about to drive my anxiety up the wall. Forgot to mention I haven't talked to him in 2 days and now I think that I'm blocked. I have an android so I wouldn't really know but every time I call it goes to voicemail. Then I realized that he was going to be around his ex this week because a mutual friend of theirs died and the funeral was yesterday. Could this have something to do with it or am I extremely paranoid? If his phone was off he could've called or texted from another phone for a heads up 😳😡UPDATE: Just called his number from *67 and the shit rang but he's not picking up. I called again regularly this time and it rang but no answer... I'm gonna lose my shit🙂🙃