Scruffy - I'm so sorry your HCG levels have dropped It sux when you come so close with a chemical. Are you thinking of trying again? If so perhaps you can try IVIG next time? I wondered why Dr. M didn't suggest IVIG for you especially if you have high nk cells in the uterus. Perhaps your body just needs the more agressive treatment for a sticky one. Wishing you all the very best and take care.