Uy, sa ganyan na signs especially abdominal tightness sa 30 weeks, please get checked by your OB agad, mamsh, better safe than sorry talaga! Alam ko maraming tao ang nagsasabi na normal lang yan at part ng pregnancy, pero kailangan talaga i-rule out ng doctor kung may issue or kung pregnancy-related lang siya, kaya don't wait. A few of us mums nag-check pa lang para sa peace of mind at okay naman, pero importante na marinig mo ang expert. Take care po!