Mama, please contact your OB right away, hindi dapat mag-take ng anumang gamot without her approval, lalo na kung may spotting ka at kirot sa puson. These signs need to be checked agad para ma-rule out ang anything serious. A few of my mum friends learned this the hard way, even "mild" symptoms during pregnancy really need professional eyes on them. Tawagan or visit your doctor na lang ngayon para mapakita mo kung ano exactly ang nangyayari, okay? Better safe than sorry talaga.