Sort of questions the credability of our Proffesional Member process doesn't it.
This obiviously a DIYER asking for advice.
The best advice I could give is it could be your transformer yes, but thre are other reasons you wouldn't be getting power to the stat,PS tripped,open Xformer,open control wiring.
It would be impossible to instruct you on steps to take and assure your saftey. After all you need to test as already has been told to you both sides of the circuit.
Open your phone book or talk to a neighbor and find your self a reputable service company and get soem heat in there!
AllTemp Heating & Cooling