Uy, yung round ligament pain talaga yan! Ako rin nag-experience nito during my second pregnancy, tapos grabe, from lower belly down to my legs, parang stretching and sharp at the same time. What helped me was stretching gently, wearing a maternity support belt (sobrang game-changer!), at avoiding sudden movements like getting up too fast or twisting ng malambot. Pero since nakaka-affect din siya ng legs mo, mas okay na i-check mo with your OB para sure lang na yun na talaga and walang ibang something, kasi hindi lahat ng pains during pregnancy are the same even if they feel similar! Hugs, I know it's uncomfortable!