Should I be upset?

Alright so this is something super childish, I know, but I gave my boyfriend a scrunchie of mine to wear on his wrist. This was my lucky scrunchie (I won several awards for singing competitions with it on) but it happened to be his favorite color so I let him wear it anyways. Well, I have my college auditions coming up soon and I asked for it back temporarily to help calm my nerves since I like to mess with it when I’m nervous. He said that he doesn’t have it anymore, either he lost it or gave it back (which I know he didn’t do), and that really upsets me. He knew how much it meant to me and how sentimental it is and he still lost it. I know he didn’t mean to, but it still upsets me. He also recently lost the bracelet I gave him for our 6 month anniversary (we’ve been together for almost a year now) and idk I know he didn’t mean to but I feel like he still should have taken more care not to lose it. I feel really bad for being upset since I know it wasn’t his fault, but am I in the right here?

UPDATE:

So idk if anyone will see this, but he found it!! He refuses to tell me where it was though so that’s weird but I have it back just in time for auditions!!