What could this be? Should I bother my GP

[Freewheelingto40]

For the past 4 weeks I've been been getting a funny rushy feeling throughout my body, like a dizzy low sugar feeling. But sugars are perfect. Joint pain now all over and a rash has developed on my hands. Any clue what this could be? Thanks in advance

Why do you already regularly test your blood sugar?

Giving this a bump in case anyone can help
But best ring your doctor in the morning

Low bloody pressure would be my first though as sugared are ok, but as PP asks: why do you check your sugars? Maybe the feeling is connected to whatever that is?