Hay mama, I had something similar around that time din, parang muscle strain or nerve thing kaya ako nag-worry, pero it turned out okay naman, still, please check with your OB talaga, especially since it's bothering you, para ma-rule out anything and ma-ease your mind! A few of us bumibigay ng heating pad or nag-try ng stretching, pero honestly with pregnancy pain it's always better safe than sorry na konsultahin agad ang doctor, hindi worth the worry throughout your pregnancy e. Hang in there, mama!