Possible Implantation Spotting?

Cass • M

So here I am, 9dpo, AF is expected Saturday (6 days away), and I have had what I am sure is implantation spotting. It was a very small amount and brown in color. I have never once spotted before AF, it's always just been 'BAM here I am!' My boobs have been excruciating and heavy for the past 2 days. That is also out of the norm. I had planned on testing with FRER tomorrow, but in light of this possible IB, I wonder if I should wait a day? The wait is killing me. This will be the first round I've actually taken supplements to help and also used Preseed, temping, and opks. Wish me luck!!!!