Hello madam, Welcome to healthcaremagic. I can certainly understand your concern I have worked through your query in detail. Brown discharge could appear after IUD insertion ,as it is pretty common and many women could experience brown vaginal discharge during one week after IUD insertion. However non stopping brown vaginal discharge could be a sign of vaginal or pelvic infections . It will get resolved on its own ,if not you have to start on antibiotics there is very less possibility that you become pregnant as this brown discharge does not indicate that. Please check with your physician if she shares my view Post your further queries if any. Thank you