I had iui two weeks ago. I was meant to test tomorrow (saturday). I couldnt wait so tested yesterday (thursday). I tested mid afternoon with a pregnancy test that detects 25 iu/ml. I got a faint but very easy to see positive line. Today however after going to the bathroom i noticed some pink discharged when i wiped. This was a couple of hours ago and there has been nothing since. My period is meant to start tomorrow. I'm so scared this means my period is about to start. Is this a chemical pregnancy? I had one about 18 months ago and this is our first time trying again. I haven't told dh yet. Just sat in bedroom scared.