Hey momsh! Normal lang yan usually, especially at 30 weeks kasi lumalaki na talaga ang baby at umuusbong ang uterus, pero since you're experiencing pain I'd really suggest checking with your OB just to be safe, mas makakatulog ka ng mahimbing once doctor confirms everything's okay. A few of us moms felt the same thing around that time din, tolerable lang but nag-worry pa rin, so don't hesitate to message your doctor or visit clinics para ma-rule out anything!