Hi
Sorry you are feeling bad. I had the same problems. First of all I did not know I was pregnant because I was not showing and came to find out my uterus was small and did not want to expand. This was with my 4th baby and I had just had a baby got pregnant 6 weeks later. I had the same pain in my lower back and hips its called your syatic nerve (not sure of the spelling). They say that should go away once you have the baby it just got pinched by the baby. If you have any other questions I am more than happy to try and help
Good luck
Katie xoxo

Ultrasound scans aren't accurate, but they are usually not off by that much. They may be off by a few days to a week or so.

I wasn't told anything about the uterus, but was told the foetus was undersized.  DD was born at 36 weeks, I was told that the foetus is the size of a 29 week foetus and would have to be born that weekend, and would only be around the 4 pound mark, or under but would have to be born as my health was failing, so the baby wasn't growing. The following day she was born a day before the  c-section was meant to happen (natural birth so i got lucky) and was 7lb 8oz with no dramas at all.  That's not to say you won't have problems, you will have to keep a good eye on things and keep up contact with the doctor, but that's my story and it worked out fine.  Good luck with the rest of the pregnancy, and just know that if bub comes early from this point on, medical science is very good with dealing with premmies.

arrgh i do know how u feel with th cramps i went into my 34th week today and i couldnt sleep on one side last nite! sorry cant help you with the other thing but i hope all goes welll and it was just a mistake. rest up and relax hun, also i heard that babnanas help with the cramps something to do with the potassium.