Tailbone

I broke my tailbone when I was young after my brother pulled out a chair from under me as I was sitting down and I landed on concrete.  Now years later I've suffered from occasional pain if I sit wrong or for too long, but being pregnant, the amount of pain feels like it happened all over again!  I am about in tears just to stand up from my chair at work.  I'm really afraid of what labor will be like if this pain continues. Has anyone else dealt with this?