when it rains, it pours

Bathtub drain was plugged used stuff called "Liquid Fire". I think I burnt holes in the old pipes. OOPS I have 3 people coming tommorrow to give estimates. I walked into my kitchen looked at the ceiling for some reason......many small bubbles, and one very large one. What's a girl to do? Oh, did I say the pipes are also horizontal. OUCH again. I did learn something...never use anything that sounds scary.