Hi,
It all started when my washing machine draind the water, the nearest toilet started to bubble.. Then when the toilet was flushed it flooded and overspilled.. Not just that!
When I went to my other bathroom, everything, even the nasty stuff,:eek: had came out of where we take a shower.. I had never seen that!. So whenever we use water it floods in that other shower.. my sinks don't flood... The other toilet does flush but then the shower floods too..
We have tried a lot of drano, and we snaked the toilet that flooded.. I don't use my washer anymore, and if we open any other water, that toilet still bubbles..
The problem is still happening!!

You have your main sewer pipe clogged . Sewer is backing up to your bath tub because tub drain is at the floor level therefore the lowest drain. When sewer starts backing up, tub drain is the first drain it reaches. Solution: you need to have your drain snaked.

Find your clean out but do not open it just yet. Drill a 1/8" hole in the clean out cap and have a 1/8" sheet metalscrew handy. If water shoots out of the hole your blockage is still downstream and you must remove a housefull of sewer water before removing the cap. If no water comes out your clogg is upstream of the clean out so you rod backwords, still a housefull of water to contend with.