Can a piece of your gums come out ?

Yes it can: There are many reasons pieces of gum tissue can come or slough off. Sometimes disease or a growth can result on tissue coming or flaking off you need to have your dentist or periodontist check it out. Rule out any infection or disease.

Yes: Especially if the gums are unattached from the tooth, or in cases of trauma.

Thanks for asking!: Not likely! more than likely something lodged in your gums came out of your mouth.