I am worried about my daughter she is 24 years old this is her second pregnancy and she is in her 2nd trimester, she went to the doctor 2-3 days ago and the doctor did a sonogram and had, had previous blood tests, she is high risk with gestational diabetes and has some high blood pressure and some swelling, she pre eclamptic last pregnancy, but this time her ob told; her that her hcg levels are very high and that she will need to have weekly nst's what does this indicate? Does she have a placenta previa? Or is she somehow in some danger of loosing the pregnancy? She states she feels good and she looks good, the baby is active , what's going on, what are the possibilities and what should we watch for or do? Thanks--concerned mom