I'm on a septic sytsem, and my toilet is overflowing and the overflow is draining into my bathtub, sometimes with fecal matter. This happened about two months ago then it solved itself but now it's back. If I leave it alone the tub will drain and the toilets will lose all of its water in the bowl and if I run the bathroom water, the toilet starts having air bubbles and the toilets gurgle. I have used a plunger and a snake on the toilets but nothing has happened. Is there something I can do or where can I go from here? Thank you in advance.

Have you opened a inspection port on your septic tank to determine if it needs to be pumped? Regards, Tom