dr Q will you look at this please?

PREVIOUS: I took clomid on days 3-7 (Day 3 was July 5th) and July 22 and 23 I had some very light spotting and pain on my left side on CD 20 and right side on CD 21. Took a CD 21 progesterone test on July 23 and got a result of 5.4. Since I thought I was ovulating on CD 21 my dr suggested that redo blood work this week. I had blood work done again July 29 (CD 27) and my level was 9.8. Dr. Q confirmed earlier this week that I ovulated based on progesterone levels.

NOW: I think I am 11 DPO today (sunday) and I have had some light brown spotting last night. It was similar to what I experienced when I was ovulating this month. I haven't had any more today so far.

I need the truth. What are the odds that this is AF showing, or that it is implantion. Thank you for your insight.