Hello dear, I understand your concern. In my opinion the HCG value is increasing but at a slower rate. But HCG values cannot be taken as standard and they are highly variable in two different people and for the same women in two pregnancies. So dont worry about tge HCG levels. And coming to symptoms of pregnancy like nausea,vomitings,sore breasts,increased urination they might be not be seen in a few people. So the status of pregnancy cannot be said just by basing on symptoms and HCG levels. But due to past history of miscarriages and slow rising HCG care should be taken. The causes of abortion during the first trimester are genetic anamolies,hormonal insufficiency like progesterone insufficiency,thyroid abnormalities, diabetes,uterine anamolies etc should be ruled out. Yes the progesterone level might be helpful. Ultrasound confirms the well being of pregnancy. Avoid stress and physical strain and intercourse. I would like you to get an ultrasound done to know the pregnancy status. Nothing to worry. Hope this helps. Best regards...Dr.Srilatha