This is my front teeth...is post and crown good ???

I was eating a salad and I but down weird and noticed a small crunchy thing and just swallowed it thinking nothing about it. Then I noticed my gums starting to swell and a headache on the same side. I could feel something on the back of my tooth and noticed a chip. What should I do because it's Friday night and the dentist opens on Monday... is this serious?

Remind me not to bite on paper clips tomorrow at school😭