Low potassium

I have stage 3 CKD and I’m taking all manner of meds for hypertension, including two diuretics. My legs get very tired when I walk and I’m wondering if it might be low potassium. I’ve read it can be dangerous to just try a suppliment. Does anyone know of a home test or some way to find out if my K might be low - it’ll take ages to get an appointment with a doc?

When I log into Labcorp there is an option to order your own tests. I don’t know which ones but you might check it out. If you’re waiting on your endo or kidney specialist can you get an appointment with your primary care doctor? Mine can get me in very quickly.
All the best to you.