Ay, mamsh, kahit common yan sa pregnancy, please check with your OB agad, better safe than sorry, lalo na 9 weeks pa lang kayo! Could be round ligament pain or something else, pero kailangan talaga marinig ng doctor kung paano exactly nangyayari. Let me know kung paano ka after your check-up, ha, a few of us moms had similar experiences pero bawat pregnancy is different talaga. Ingat ka!