The answer to 'my bathtub is leaking' is that there are several common causes, including worn-out caulk, loose drain fittings, and cracks in the tub itself. Symptoms may include water pooling around the tub, dripping sounds, and water damage to the floor or walls. The best solution depends on the specific cause, but often involves reapplying caulk, tightening drain fittings, or even replacing the tub if it's cracked.
For minor leaks, a DIY fix may be possible with some basic plumbing skills and tools. However, if the leak is severe or the cause is unclear, it's best to call a professional plumber. They can diagnose the problem and provide the appropriate repair or replacement solution.