Plumbing Questions? Ask a Plumber and Get Answers ASAP.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.
Sounds like you have a stoppage. The main drain will need to be snaked. You can rent a large motorized snake to snake the line yourself but you might want to just call a drain cleaning service. Their cost usually isn't much more than the rental fee and you won't have to deal with this rotten messy job.
You snake the nearest cleanout. You can't snake through the toilet although sometimes the only access is to pull the toilet off the floor and snake through the toilet pipe. Drian cleaners are usually less expensive than plumbers. Think Roto Rooter (not an endorsement of that franchise). Some plumbers also do drain cleaning.
You may have just the branch of the main that's clogged if the other toilets are OK and aren't backing up into the problem one.
That doesn't change my answer. You're describing a stoppage in the main (maybe a branch of the main)
If just that toilet (itself) was plugged the other fixtures would have no impact on it
I've already explained this. It could just be a branch of the main that's clogged
If you don't have a nearby cleanout you have to pull the toilet and run your snake down that pipe. If your house is on a slab this may be your only option
No product you can dump down the drain is going to clear a stoppage. Snaking is the only effective way to clear it. Like I said initially you can rent the equipment but the rental cost isn't much less than the cost of a drain cleaning service . And you'll probably have to pull and reset the toilet.I'm logging off for the night. I'd appreciate a favorable rating. If you have more questions I'll respond in the morning.
Far from leaving you hanging I told you that you either need to rent a snake or call a drain cleaning service. I'm sorry if pulling the toilet and running a large power snake is beyond your capabilities. I have no control over that.