Hai babe! Yes lah, ligament pain in that area is super common around 19 weeks, a few of us went through the same thing, where the round ligament stretches as baby grows and it can feel like a sharp or achy pain in the groin/pelvic area. But since you're experiencing it, best to mention to your doctor or midwife during your next checkup just to make sure everything's okay and get proper advice on how to manage it, sebab they can check if it's just the usual stretching or something else. In the meantime, some mum friends swear by rest, warm compress, and gentle stretching, but your doc will know best what's safe for you at this stage!