Help me please?

Brittney
Okay, long story lol.
Okay, got my nexplanon out July 31. Had period from July 27-aug 6. Was fertile from aug 7-13. Ovulating on aug 10. Had sex all of those days with no protection. Is there a chance that I could be pregnant? I'm taking a test next week and if that doesn't work then I'm gonna get blood drawn from my docs. I'm also having sore breast ans itchy/sore nipples, nausea, and some mild cramping. I had a very light pink discharge the other night when I wiped after I peed, I didn't know of that was inplatation bleeding or not, because I never had that with my first. I just need some advice or whatever lol. But seriously please help me out before I freak the hell out lol.
Thanks. (: