question: I think I might have swallowed a piece of nail. I went to see on interne but I get really different answers. Most say it isn t dangerous to swallow fingernails as it is made of keratin and it will go away thanks to the acides in my stomach. But there are also some that say that it is really dangerous. I don t know what to do. I m not even sure if I swallowed it or not! It just that I have a weird sensation in my stomach and under so I don t know.