Anak, if you're having side pain near your ribs, it's best to get that checked by your doctor soon, hindi kami dapat mag-assume kung bakit talaga yun. A few of my mum friends experienced similar things during pregnancy or after, pero bawat tao talaga different, so kailangan talaga tingnan ng doctor para sure. In the meantime, try to rest and avoid positions na mas nakakasakit, pero please go see a doctor para ma-rule out anything serious, okay? Wag mag-worry, basta confirmed na lang ng professional.