Hi mama! Cramps can happen for different reasons, pero dahil first time mom ka, mas safe na i-check mo with your OB agad, lalo na kung ongoing siya, better safe than sorry talaga. A few of us here had different experiences with cramping, kaya best na marinig mo from your doctor kung ano talaga ang happening sa iyo. Please don't worry too much while you wait for your appointment, okay? Keep me posted!