I actually had to Google “heating pad during pregnancy.” Why? Because I have become addicted to mine and I got worried about using it on my lower back where my pain is centered today.
I’m happy to report that they are considered generally safe though not recommended to use on your abdomen. The largest concern is heating up your core body temperature which is the same reason Hot tubs are not recommended because it can cause birth defects and miscarriage according to the March of Dimes. (at least the few articles I scanned).
So it’s better to be safe than sorry even when you feel stupid wondering about such a mundane thing as a heating pad.
Of course there are probably safer heating pads to use than mine. It’s about 20 some years old, the cover is long gone and the cord is crinkled though no wiring is exposed. This sucker gets HOT! (I’ve had red welts on my skin for days because I fell asleep on it).
Since my back problems at work were not improved any when I fell on the concrete floors Friday thanks to lovely Armorall in front of the women’s restroom, my heating pad and chiropractor will be my sidekicks for at least another week.