Basal Thermometer

So... everyone at pharmacy’s has had no idea what I’m talking about when I call and ask if they carry a nasal thermometer... 🤦‍♀️ literally gone through explaining what it is and then waiting to be told they don’t have them... and I’ve looked at Walmart and Target but no where has them. Anyone know where I can go into a store and buy one? I can’t order one online because no where can find my address.

Also I live in a decent sized city so there’s plenty of options.