Aw mama, back pain and leg pain like that especially during pregnancy is really tough, I remember one of my mum friends couldn't sleep din kasi ang sakit, tapos na-refer siya sa OB para ma-check if may nerve issues or ligament strain. Definitely bring this up with your doctor talaga, lalo na if it's affecting your sleep kasi that's your body saying it needs help. In the meantime, a few of us swear by a good maternity pillow between the legs and under the belly, plus warm compress, pero yung actual relief talaga kailangan assessment ng doc to rule out anything serious. Sending you comfort soon, sis!