Ay, alam ko yan feeling, sis! Iba-iba talaga ang pregnancy body pains, pero ang side and back pain sa ganitong stage ay quite common talaga dahil lumalaki na ang uterus at nagbabago ang posture mo, plus ang ligaments are stretching na. A few of us sa circle ko had the same thing around 10-11 weeks, kaya hindi ka nag-iisa dito. Still, mas safe kung i-check mo ito sa OB mo just to rule out anything else at para ma-ease your mind, lalo na kung ang pain ay intense or may iba pang symptoms. Tenderness and aching sa sides and back ay normal, pero it's always better to get a professional confirmation, especially pag first pregnancy mo pa lang.