27 weeks and a waddle that would make a duck jealous

It's been an ongoing annoyance from rather early on in pregnancy, dull pain at the base of my spine, my left butt cheek, actually. Over the past 2 weeks, the pain has grown worse prompting me to seek chiropractic care from multiple chiropractors. When I'm in a delivery, getting up from the bed, stool, or chair, I really have to brace myself to stand up, often accompanied by an audible groan. Getting out of bed to pee in the middle of the night, or waddle in for a birth, oh man, it's sooo painful. Rolling over in bed? Forget it. I have to choose one position an keep it all night. Now, I know what you may be thinking, I'm just getting fat and achy. I've gained just 10lbs the whole pregnancy (another issue in itself, I'm working on that one). Icing it? Done, that sacro-iliac joint is so deep it feels good to ice but doesn't get down to the joint. Icy hot? yep, did that too. And next week, I have an 18hr flight to the States to look forward to. All in all, it's a huge pain in the ass.