Thanks everyone!
The three of us slept on the living room floor last night (well, Tate was on the sofa), just in case Finn had to throw up again. For the most part, Finn slept well but he threw up again this a.m. and still no object to be found. [MENTION=6311]Vikinggirl[/MENTION], he bit off that rubber piece on Sat night and I lay the piece down on the table to throw away "later" (argh!!!) that same night. So, if he did swallow it, it could've been later that night. Since he was feeling unwell on Sun a.m. already, that's what I would suspect time-line wise anyways.
If he did swallow an object and he passes it, say in a week, will he still be exhibiting symptoms of vomiting and not eating between now and then? Scares me to think that I'm at the mercy of waiting for this thing to come out while Finn is still suffering. I'm just really worried. Thanks all.