Hi, Dear sir/madam, I had two early miscarriages and diagnosed with positive ana (ana with 1: 40) and have undergone iui this cycle. After ovulation, I am on progesterone. Kq 100, folate and ecosprin. Dr. suggested to start low molecular weight heparin injection as soon as I see even a faint positive line. I got very faint positive yesterday (two weeks after iui) and started clexane 0.4 ml yesterday itself as per our doctor suggestion. Today morning, when check urine pregnancy test kit, it has shown negative. Is it because of heparin injection or is there anything else to have concern? Please suggest.