Mama, yan ay important medical question talaga, please ask your OB-GYN directly bago ka magpaxray, okay? They know your pregnancy status and risk factors best, kaya sila ang best to advise kung safe o hindi for you and baby at 7 months. Most of my mum friends say their doctors guided them case-by-case depende sa reason for the xray and kung urgent talaga. Pero hindi kami doctors, so really check with yours muna before doing anything. Praying it's nothing serious, mama!