Re: Severe back and leg pain
If you have pain this severe, it might not be a bad idea to contact your ob/gyn or GP. Have you had an ultrasound yet to rule out an ectopic pregnancy?
In pregnancy, your legs can hurt because the uterus is pushing on the nerves, but 10 weeks does seem early. Of course your symptoms may not have much to do with your being pregnant, apart from the hormones maybe making some previously existing problem more apparent. The leg pain could be something neurological and having back pain when you're standing a lot is pretty normal during pregnancy, even this early.