My 4 mo old kitten may have eaten a little bit of soap or shampoo?

I accidentally locked him in the shower and he knocked over some shampoo bottles trying to get out. The soap was also in an accessable place for him... A little bit after I discovered him in there and let him out he threw up a very small amount of food he'd just eaten. I looked back in the shower and I didn't see any shampoo spilled, but he still may have ingested some or licked the soap bar. right now hes alert and happy, but is there any thing I should do to help him? I'm babysitting right now and my parents aren't answering the phone.