Chiropractor for SI pain?

Has anyone tried a chiropractor for SI pain? I've been dealing with severe pain at night and moderate to severe pain during the day for the last month and a half. I have done everything recommended to me by my coworkers (physical therapists) but I only get temporary relief (say 30-45 min.) I'm desperate at this point. I'll try anything. My doctor has a chiropractor she sends her pregnant patients to. I am a little hesitant but since it is recommended by my doctor, I'm willing to give it a shot. I need to stay at work as long as possible but it's a very active position and they are doing their best to accommodate me. Anyone found relief??