Check the inside of the fridge, too.

OP, both DH and I have lost our wedding rings and we've only been married 6 years. His was lost in public and he knew where, but it was gone. I lost mine somewhere in our apt. and I am thinking it will probably turn up when we move. If not, oh well, I'll get a new one like DH.

I would wait at least 2 weeks, maybe 2 months, before considering buying a new one. I think at some point you will find it and be like damn, now i remember taking it off when I was peeing and placing it in the Q-tip box or whatever.

Do you have any pockets that might have a hole in the lining? In an item of clothing or purse or bag? I've "found" several pieces of jewelry that dropped through a rip in the lining into the bottom of a bag or outer pocket.