14dpiui : very faint bfp, with AF spotting at the same time

Today is 14dpiui. This morning I wokeup feeling not good, and realize there was some changes in my CM. It became a slight reddish. :(
Feeling miserable while i was away and couldnt consult my RE, i went for bath and tested another hpt. The clearblue, that show "+" for bfp, and "-" for bfn.
It gave me a very faint line for the "+" sign, I cant believe i saw it. (but its not so clear in the photo as i snapped it.)
It was a very light line, that appear within one minutes after i poas.
Is it a chemical pregnancy..? Or else why i suddenly get blur lines after all the bfn before this, but im spotting for the bloody AF.?

This is so tense-up, as i see line n having sign for my AF at the same time. I dont know how to predict it.

11dpiui and BFN

this morning i tested again. big fat NO.
its killing me, with all these symptoms.. how could it be wrong??
DH was frustrated too but he handled it better than me.
i tested with predictor hpt and clear blue hpt. both BFN.
i was so devastated, cried myself out loud while driving.
i found driving as one of the way to soothe myself whenever i was under stress or upset.

however i did took a look at clear blue after few hours and i can see a faint line, while the result was still the same with predictor's hpt.
so?
could it be the chemical reaction??
i still want to hope, and wish, and pray... for the line.