<human>:  I need help fixing a plumbing problem in my bathroom.
<bot>: The best thing to do is to start by checking the pipes to make sure that nothing is blocked or leaking. If there is a blockage, you may need to use a plunger to clear it. If there is a leak, you will need to replace the leaking pipe. If the problem persists, you should call a plumbing professional to come and take a look.