Am supposed to be doing second <a href="https://glowing.com/glow-fertility-program">iui</a> in a few days time and had a bit of spotting for the last 2days then last night started to bleed almost like a period but am on Cd 12 and just finished cd 2-7Fostimon ( which wasn't working so doc switched it up ) then had menapur for cd 7-12 all injectables .. Took opk today and am at high fertility... So confused .. Am I out this month or is this a common side effect? I have been exercising more than usual ( just to get my mind off babies .. Could this be the cause ?? Help !!