I live in a rather old house and recently my toilet has started to bubble anytime we run the washer which is in the same room. It has started to get worse lately. After the washer runs the tub will fill up with gross water and the toilet will over flow and nt wrk right for quite sometime after all this starts. Could this just be a clogged drain or could it be something else. The sink in that bathroom is acting normally its just the washer, toilet, and shower that's giving any problems. Please help.

You have a partiall blockage somewhere in the main house drain. The drain will have to be augered. Look for any cleanouts that are at least 2 1/2 inches or larger. Remove the cleanout and check for water when the backup is occurring. If you see signs of backup at the cleanout, auger from there.