Hey mama, upper abdominal pain during pregnancy can be normal sometimes (like from stretching or even gas), pero since you're already 24+ weeks, mas better kung icheckup mo na ito sa OB mo to be safe, especially kung persistent siya or may kasama pang ibang symptoms na nakakaalarma ka. A few of us moms sa barkada namin, may similar concerns kami during second trimester, at pag tinignan ng doctor namin, mostly just normal pregnancy stuff, pero important pa rin na i-confirm ng professional, especially first time mom ka pa lang! Keep an eye din kung mag-worsen or mag-improve, and don't hesitate to call your OB anytime kung uneasy ka talaga. Sending you healthy pregnancy vibes!