Am I PREGNANT?

Last July 6,8, and 9..i had an unprotected sex.. All i knew he did the withdrawal thingy. But this july 11, i saw a lil blood spot in my underwear (once) and my cervical mucus is dry, thick, and yellow-green in color (until now), I also had a mild cramp (sometimes) started july 13 until now.

I am so worried so i take 8 Lady pills last July 12.