Been there a few times, though not recently. Definitely wear several loose layers, two pairs socks (avoid cotton, wool is best), a hat, thin wool neck scarf or if convenient a big warm shawl or small blanket used as a shawl. Wear gloves or mitts - if you're working with your hands, use those fold-back mitts.

"Every couple days" using a heating device for water will not keep your pipes from freezing. Leave a couple taps dripping.

When you get out of this bind, invest in a good secondary heating source. We frequently lose our power, but have a woodstove and propane cooktop, so no biggie.

Incandescent light bulbs give off heat, oven can be used for an hour or two. I don't recommend candles if you have pets or long hair (Ack! Yep, been there, lucky to have just lost a chunk of hair).

Hope you warm up soon!