Pain in my lower left side

Hi mommies , 21 weeks napo ako kaninang 5pm parang may sharp pain sa left side ko tolerable naman po . Nawala siya in a few minutes . Naulit po now and nawala din naman po. Wala naman po akong bleeding or kahit anong ibang nararamdaman. May naka experience napo ba nito ? #1stimemom #advicepls #advicepls #firstbaby #pleasehelp #pregnancy