Alah, normal laa tu! I'm 20 weeks now and I still get that uncomfortable feeling, especially when I turn ke sisi or bangun dari tidur, a few of my mum friends say the same thing happens around second trimester ni because your ligaments stretching and baby growing. Boleh jadi round ligament pain or just the uterus expanding, but if it's sharp pain or comes with spotting, better check with your doctor to be safe, okay? Meantime try to rest more, drink plenty of water, and wear a comfortable maternity support if it helps!