How do you know when your turbo is out? Options

[mk7celica]

This weekend I installed a new mbc and I had it set to stock boost at first then I raised it to 14lbs. I forgot to tighten a clamp for the coupler on the turbo going to my fmic. Well the engine killed I pulled over and put it back on tightened it and drove home. I decided to go for a test ride and I was in 2nd gear building boost got to about 12lbs and I heard a woosh of air like the intercooler pipe popped off again so I pulled over checked it and all other clamp an they all was on and tight. So I started to drive again and noticed my turbo was not making and sound and I was not building no voost. The car is like a n/a engine now less power no boost and the turbo lines,couplers ect are on and tight. I kind of hear a low clanking noise in the turbo I think. Is my turbo bad? Car runs and starts fine just have no boost and no sound from my ct26? whats the deal?