After/during a shower, or now even when I flush the toilet or turn on the taps for a bit at the hand basin, water comes back out of the drain in the bathroom floor. This started about yesterday. I think it's getting worse, some toilet paper is coming up too.

Can I plunge it or use a drain snake, or do I need to call the plumber? It's just that I rent and work shift work, so it's hard to coordinate visits.

Thanks!

Pull toilet and snake main drain.