Damage in a rental - our fault ..

[Peekaboo]

Definitely contact the real estate agent BEFORE you do any repairs yourself. If you have their email, send through some photos. Otherwise the property manager may want to organise a time to come look at it. I doubt this is something they would terminate your lease over, and I don't think it would go in your rental history either. Try not to stress, accidents happen!

[Traveller]

Don't replace it without speaking to the rental agent. Your landlord may have insurance that will cover the damage. Don't stress though, damage happens and speaking as a landlord I wouldn't worry as long as the damage wasn't malicious.