Excruciating sciatica pain in left hip at 14 weeks.

Hi ladies. I'm 14 weeks 5 days with baby #1 and just today have had this terrible pain come out of nowhere. Its located in my left buttock hip area and is excruciating to the point I become light headed and nauseous and cant walk. Went to the chiropractor today for some adjustments and it has not seemed to helped. I am desperate for any relief. I've iced the area on and off for an hour as well. Do any of you ladies have this problem? What has helped you?