Could I be pregnant?

Cynthia • I`m happily married, no children yet! Looking forward to what my future holds!!
I am 6 days post ovulation, I started having sore breast about 2 days ago, and yesterday I started having mild cramping feeling. I normally get this feeling a few days before AF comes... but I have 8 days still I start AF... Started metformin about 2 weeks ago, supposed to start Clomid next month? Could I be pregnant?