I had several positive pregnancy tests on December 29th and 30th 2011. Then I had bleeding (lasted 3 days) and pelvic pain (pain lasted only 30 mins). Went to hospital and they found nothing with ultrasound and very low hcg levels. Dr. said I most likely miscarried. My pregnancy symptoms went away. Now today, Jan 9, 2012 I vomited in the morning have back pain and headache. last night had horrible back pain and felt dizzy. We have not had sex since I miscarried (we did have sex a week to 2 weeks before i miscarried). I just took a pregnancy test and it's negative. Since my hcg levels were low several days ago i figured they would be gone by now. What is going on with my body?