Hello... I have a terrible question... what should I do if my child at…

Hello... I have a terrible question... what should I do if my child ate a piece of something with cockroaches in it? My husband killed a cockroach under the mattress yesterday. In the morning, the child ate a piece. Yesterday, I was very tired and fell asleep in the morning. That moment the child ate the cockroach. I noticed that the child's hands and mouth were black and small dots. The child plays well. But I am still worried. On the internet, I read that you can give enterosgel.