Hi everyone, this is my first post and is probably a strange one. I say that because I've typed so many things in to Google about my symptoms and simply cannot find any posts relating to my issue :(
I'm 18 weeks pregnant and I'm experiencing THE WORST back and rib pain. This has been ongoing for a few months and started early pregnancy but it wasn't until recently that I realised the pain at the top on my back links to the pain in my ribs and is trapped wind! It only occurs when I sit down and it just turns up within minutes of being seated, in the same place, every time! I could be on the sofa watching tv, in my car driving to work, in the bath trying to relax or at my desk at work and there it is just poking away at my insides causing a very unpleasant feeling. It's constant, if I burp it sometimes releases it BUT only for a second and then it feels like a pocket of air just pops back up and sticks right in my back and ribs and oh my god it's so painful, uncomfortable and annoying! WHEN WILL IT END?!
This is in addition to my very sore lower back which is definitely not trapped wind! 
Has anyone else experienced this or going through the same thing? I'd love to know what to do to relieve the discomfort as I spend a lot of time travelling to see family in the car and I work at a desk which of course does not help when I'm sat down a lot! Although I do get up and walk around as much as I can.
Any help would be greatly appreciated,
From a very sore and uncomfortable pregnant lady!
Xx