When I’m in the shower, the toliet bubbles like it’s going to explode all over with water. If I turn the shower off, the toliet stops making the noise. Please help. My husband had the plumber snake it twice, once all the way to the street but it’s still doing it. I cannot afford to pay a plumber again. On the other side of the shower, behind the back wall is my washer and dryer. Also, I have another bathroom at the other end of the house but it never does that. Thank you so much.