Mama, please check with your OB agad, especially kung 2 days na at affecting your sleep na, kailangan i-rule out kung ano talaga ang cause para peace of mind mo. During pregnancy, pains kasi pwedeng from stretching ligaments, pero pwede rin from ibang reasons na kailangan i-assess ng doctor mismo. In the meantime, try switching positions slowly, use a pregnancy pillow to support your left side, at kung hindi ka matulog well, that's your sign to get it checked sooner rather than later, walang pagsisisi dyan. Mama, huwag mag-worry lang, most of the time okay lang, pero better safe na alam mo exactly what's going on. Hugs!