Oo, maraming kaibigan ko naka-experience nito! At 13 weeks, super common yan, it's round ligament pain, which is basically your ligaments stretching as the uterus grows. Usually sharp lang siya, on and off, especially when you stand up quickly, sneeze, or magroll ka sa bed, hindi constant, kaya alam mo it's normal. A few of us noticed it peaks during second trimester and tapos lang in seconds, so if you're just feeling twinges on the right side and walang heavy bleeding o severe cramping, likely ligament pain lang yan. That said, always worth checking with your OB para sure, especially since it's your first time, they can rule out anything else at peace of mind mo!