Eh sayang, back pain in first trimester memang common tapi kena check dengan doctor untuk make sure okay je, bukan semua sakit belakang tu normal during pregnancy, some dapat be signs of something else yang perlu attention. A few of my mum friends kena sakit belakang awal-awal pregnancy, but some caused by how they're carrying the extra weight, some pulak hormones je yang relax the ligaments. Better see your doc lah, even just a quick check to put your mind at ease, okay?