BFP? could it be?!

Kr
So, my husband and I are ttc, and I took my first test at 8dpo(I am PRETTY sure, not positive on O day). The test was bfn at first, but I woke up to a faint BLUE line. I thought evap lines were always clear? It's super early for me to even test.... is there hope?!? What do you all think? 
P.s the blue line is slightly darker in person. It's hard to see on this pic. Sorry
I also have cramps, twinges, headaches, can't sleep right, back pain, sore nipples, and -slight- nausea. 

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