Not sure what to think..?!

(Keep in mind that I used OPK's and am only 9dpo right now, but today was AF start day, So this morning When she wasn't here I took the first response test. after the minimum required time, i looked and saw the faint line, so I then took a clear blue weeks predictor one and it says I'm not pregnant... Could I still be preg but my hormones are too low still to be read? Help! Kinda freaking out lol