Pelvic girdle pain

I am 17 weeks and have been diagnosed by my doctor with pelvic girdle pain. The pelvic pain/pressure that I’ve been feeling has increased significantly this past week. Does anyone have any tips on how I can alleviate some of the pain on my own? I’m seeing a chiropractor once a week and getting massages biweekly but I find that the results only last a day or two and I can’t afford to go any more than I already am.