How cold is too cold?

Liz • 37, trying for baby #2! 5 m/c, 1 d&c. 1 ectopic. One perfect almost 2 year old son who is my world.

I live in Massachusetts in an old drafty house by the ocean and I’m worried that my baby is getting too cold. We’ve been keeping the thermostat at 65 and have a space heater running (only when we’re home, it’s new, and in a safe place) to help the house along. The temp in the main living room is juuuust at 65 and the other rooms can only make it to 62 or so. The baby has been fussy lately and I can’t help but wonder if the temp could be part of the reason. What temp do you keep your homes at? Should I bite the bullet on the heating bill and kick it up a bit? HELP!!!