Ay mama, that's a tough situation, complete previa with cervical shortening is really something you need to manage closely with your OB, kaya please check with them first bago mag-try ng any support belt, okay? A few of us tried maternity belts for different reasons and they do give some relief from the pressure and baby's weight, but sa case mo with the cervical changes, kailangan talaga ng doctor's go-ahead para sigurado na it won't make things worse. Your OB might recommend other options like pelvic rest, progesterone shots, or even a cervical cerclage depending sa severity, ang goal talaga is to keep that cervix stable until 37 weeks, so professional guidance is really the safest route here. Fingers crossed para sa inyo, mama!