Sometimes it takes two or three cycles to fire, if it hasn't been used in a while. First, light a burner on the stove, to get gas flowing quicker, and closer to the furnace. Then try the furnace again.
If you're going to "regret it in the morning", sleep until noon.
2012 Jay Flight 19RD
2016 Ford F150 XLT 2X4 SC 3.5L Eco Max Tow
2010 Tundra TRD DBL Cab (Traded)
2 new fluffy Corgis, Bayley and Stanley