Light Spotting

Nicole • TTC#4 Tubal Reversal 11/22/17 TTC since December 2017

I had a 27 day cycle. I am currently on CD9. My period was only 4 days with only 1 day heavy flow.

(I normally have a 28 day cycle with 5 day period with 2 days heavy flow.)

I had sex on CD3 & CD4. Then had light Pink spotting on CD6 and today CD9.

My OPK is negative. The test line is very visible but not the same color or darker than the control line.

I am so confused on this cycle. I am wondering if I could possibly O early this cycle??

Anyone else experience this and Ovulated early?