Aah sakit bawah perut masa pregnant memang scary kan, tapi kalau sudden sharp pain dari duduk cepat-cepat biasanya round ligament pain je, very common and normal, bukan sign ada masalah dengan baby. But since you're worried, better check with your doctor or gynae just to be reassured, especially kalau sakit tu tak hilang or gets worse, they can do a quick check and put your mind at ease! Jangan risau sangat okay, most of us rasa stretching and pulling sensations je during pregnancy.