I have the same problem. This has been going on for weeks and I am at my wits end. Can't afford a plumber. I have done every thing except snake. I purchased one but haven't worked up the nerve to use it yet. Any precautions I should take?

Please explain your problem in detail. If you need to snake the tub drain here's how to do it, (see image). To snake your tub remove the two screws holding the chrome face plate and pull up and out on the linkage and plug. Feed your snake in through the opening. You will run into the return bend of the trap about 18 inches down but crank and work your way past that you should only have 6 or 8 more feet to run out. Flush with a tub of hot water. Good luck and thank you for rating my answer, Tom