Implantation Bleeding?


I had an <a href="">IUI</a> done August 21st. I am suppose to test on September 4th. I started to spot on Saturday, it was very brown, and light. Sunday it stopped came back was slightly more red than brown but still very light and today has been red but not super heavy. I am also having cramps. I have never spotted before a period before and it's never brown in the beginning. I'm sure it's unfortunately my period. I'm going to test in the morning just to make sure, wondering if anyone had anything similar and actually ended up with a BFP.

Thanks in advance!