When we drain the upstairs tub, the downstairs toilet gurgles and the tub water is coming out of a drain in the bathroom floor that has a plug in it. A few days ago, the downstairs toilet appeared clogged and then the downstairs shower was going and water started backing up in it. After plunging the toilet, the water went down in both the toilet and shower. Hyatt want to know if I need to plan to call a plumber or is this an easy fix?