Hmm, at 23 weeks pregnant, this berpuasa while heavily pregnant thing is really quite taxing on the body, your baby needs constant nutrition and oxygen, so bila you fast then tiba-tiba makan, the blood sugar spike lagi berubah-ubah, ditambah your expanding uterus is already pressing on your lungs which is why you get that shortness of breath feeling. A few of us mum friends yang pregnant during Ramadan shared the same experience, rasa nak pengsan, especially kalau sudden activity after fasting, so honestly you should check with your doctor about whether continuing to fast is safe for you and baby, sebab this dizziness and breathlessness isn't something to brush off. Kalau tetap nak fast, maybe try breaking it with something light and slow-releasing (like dates with milk) instead of jumping into cooking or heavy activity right away. Take care of yourself, ok!