Just yesterday my toilet started burping and will not flush is it just clogged or is there a venting problem. Before u did have to hold the handle to make it flush. I can get the water to drain from toilet if a plunger is used. this is a dwnstairs room. When the kids took there bath last night we drained the water and checked the bath room downstairs and the the toilet and sink were filled with bubbles so not sure whats goin on here.