Lower back support

Hey ladies! I'll be 15 weeks tomorrow and my lower back has been very sore for the last few weeks. I go to the chiropractor usually twice a week, and my lower lumbar and pelvis are usually twisted/tight. Of course as my belly grows out, it puts more pressure on things. Any suggestions for good lower back support? Any belly bands anybody has used or uses to help? I'm on the go a lot, and need something to help with the "pull" as my belly grows! Thanks 😊