So it's a bit of a weird one....on Friday I went for 12 week scan and sonographer told me to go and empty my bladder as it was too full. I went to the loo but despite being desperate for a wee nothing would come out! I told sonographer but she didn't really aknowledge it and just scanned anyway. When I got home I was able to wee, albeit slowly, and I've been fine since. Then today at work, I was busy so by the time I got to go to the loo I really needed to go but the same happened again. 
When I has a private scan a few weeks ago they told me that I had a retroverted uterus which tilted backwards. I've looked online and seen a few people have said they've had similar problems but it sorts itself out when the uterus moves forwards. Just wondered if anyone else had experienced this? I'm started to get paranoid that I'm not going to be able to pee and I'll burst!!