Mama, please check with your OB right away or go to the hospital if the pain gets worse or you feel dizzy, better safe than sorry, especially pag may stiffness pa! Alam ko sobrang nakakaworry yan, lalo na kahit okay ang ultrasound. A few of us moms felt different aches during pregnancy, pero pag upper right at may tigness, kailangan talaga i-confirm ng doctor kung ano exactly ang nangyayari, baka ligament stretching, baka something else na kailangan monitor. Hindi kami pwedeng mag-assume dito, ha? Salamat ng result ng ultrasound though, pero ask your OB kung ano ang dapat mong i-expect or i-watch out for. Rooting for you!