Posh~if you are hypokalemic, your dietary Potassium may not be a sufficient means of normalizing your blood Potassium. OTC Potassium may not be stong enough either. A provider will need to order a blood Potassium level, and if low, a prescription for Potassium will be prescribed. I would suggest you make a doctor's appointment and make sure you avoid diuretics and/or laxatives.
If you have hypokalemia, increase your potassium level with medication or diet. You may want to get confirmation with a blood test.