Sayang, bacaan BSP yang berubah drastik macam tu memang pelik! Kena pergi jumpa doctor cepat sikit, bisa jadi ada technical issue dengan meter, or something else that needs checking. A few of my mum friends yang monitor blood sugar juga pernah alami bacaan yang inconsistent, and the doc always check the meter dulu. Jangan tunggu lagi, book an appointment with your GP or diabetologist okay? They'll sort out whether it's the device or something yang kena monitor. Take care!