Can i experience k def. symptoms like strong heart beat, muscle cramps, hypoglycemic feeling, tiredness and sleepiness with k level 3.7?

Hypokalemia symptoms: Potassium lowering is called hypokalemia potassium is an intracellular substance we measure the blood potassium to gain an idea about the cellular stores since we cannot go in ythe cell generally a low potassium in serum suggests low in cell symptoms such as you mention can occur with the levels you talk about in the right settings older age other medications coexisting illness it is important tow.

Potassium: The level 3.7 would usually not be associated with those symptoms.