I've been experiencing some of the most excruciating back pain this week. I spent 12 hours Monday in the airport waiting for a delayed flight and it started a bit then. Then Tuesday, Wednesday and most of Thursday were spent sitting at a work conference. I figured it was stress knots from the airport stuff on Monday, until it continued and got worse. I'm moderately okay when walking but when I'm sitting it is terrible. And that's putting it mildly. It feels like I have knots in my back but DH has tried to massage them out and there are none. Initially it felt more upper back but now it seems almost middle back. Luckily I have my next doctors appointment on Friday so I can mention it if it continues but I pray it doesn't. It's seriously some of the worst back pain I've ever had. And I'm only 20 weeks so I don't think it's belly related or anything either. Anyone else have this?