I am oNeg. I was told 2 weeks ago that I had miscarried because the Doctor pulled some tissue from my cervix which is still closed. Then he called and said the tissue was not baby but lining from my uterus. My HCG levels are 450 as of Friday but he still says I may not be pregnant. I should be 5 weeks. I was also given a Rhogam shot last week. Will this hurt my baby if I am still pregnant? What do you think about all of this?