Back ache

Is anyone else having back issues now that bub is getting bigger? I used to do airport transfers, slinging suitcases that were 20kg or more while hunched over underneath a coach but carrying my 8kg bub around is killing my back way worse than that job ever did. Does anyone have any suggestions? I'm already on the lookout for a baby carrier that has more back support (the one I have is a hand-me-down from a friend that doesn't have any lower back support) but any other suggestions on how to help alleviate or avoid further back pain is appreciated!