My husband isn’t wearing his wedding ring.

My husband has always been super conscious of my wedding ring and will point out if I’m not wearing it. I wear my ring almost always but if I’m cooking I’ll take it off sometimes and if I forget to put it back on, he’ll ask me where it is and why I’m not wearing it. So this is why I’m thrown off by this ordeal. He is currently on a six day business trip in another state. I was putting away his laundry and saw his wedding ring box in his middle drawer. It’s always in the closet because that’s where I keep my ring box too (I always keep boxes for jewelry. Don’t know if that’s normal or not). So I looked in it and his ring was in there. I’m really upset. I don’t want to jump to conclusions. I want to ask him about it and I will but he is busy at the moment so I can’t call now. I don’t know if I should even ask now or if I should just wait until he gets home. Is this suspicious to anyone else?