Welcome to Remodel & Renovate, knc02!
So sorry you are having trouble and I'm pretty sure it's not something that your should have to live with. While I can't figure out why your bathroom is flooding (unless there is some connection between the flooding and the plumbing or maybe your kitchen adn bathroom share a wall, and it's going under teh walls?), it does sound as if your apartment need help.
Reprot it ASAP to your landlord --- if he/she doesn't already know about this problem, he/she SHOULD be informed. Constant inundation with water can't be good for the apartment's structural soundness, there is a potential for mold, and if there is anyone under you theya re probably being dripped upon as well!
If they can't get it fixed, then perhaps they can find you an apartment of equal size and condition that does not flood...
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