My hubby and I have been ttc for 4 months now Came off mirena iud oct 2017 ( well that's when I noticed it was gone ). Had 2 cycles back to back in sept 5 dys each 1 wk apart One oct 17 for 4 dys. Nov 19 lasted 6 dys. Dec 14 lasted 5 dys According to the calender should've ovulated around dec 29 We've had a lot of BD going on prior and after. So now my cycle should come Jan 12. About 3 dys ago I noticed when I went to the bathroom kinda gloopy brownish red blood in the toilet. Other than when I sat on the pot I was only seeing smudges on pantyliner The next day was slightly heavier and today it has eased up ( maybe fill 1 super tampon all day ) no cramping but alotof nausea dizziness and some breast tenderness. Could be this be implantation? I'm usually heavy cycled with cramping even before the iud so this is completely off course