Ay, nakaka-alala yan lalo na first time mom ka pa lang! Honestly, a few of us nag-experience din ng ganitong side pain pag umuubo especially around 7 weeks kasi lumalaki na ang uterus and everything's stretching, but since you're in early pregnancy, mas safe talaga na i-check mo with your OB para sure lang, better safe than sorry, 'di ba. Take it easy muna with the coughing if you can, and stay hydrated po!