For this month it shows I used about 117 cuft and 124 therms. The stove, water heater and dryer are gas, however, those were not being used during this billing cycle (Bill was $25 before using the furnace)
How many CU FT are you using per month, what all do you have that's gas and what are the firing rates? Do you have a fireplace(s). Are exhaust fans running a lot? What is the humidity level it the house? All crawl space? Attached garage? Unusual exposures, such as open fields, lakes, sitting on a hill exposed? .