i have sewage water backing up and coming out of the bottom of the floor on the downstairs toilet as this is the lowest point in the house... right outside the house 5 feet from this toilet a pvc wye with a cap it... when i unscrew the cap, water comes out as its about as high as the floor... is this more than likely a clogged main in my front yard(i have a tree) or could it be something more serious...its 3am now and just finished cleaning up the water from my last load of laundry and the pipe in the yard is full...is auger the way to go here...