Faint bfp than spotting ??? 12 dpo

So I’m about 12 dpo or so.. i took a test tonight and got a faint pink second line.. no doubt there ! however last night i took one and got a complete negative..

Could i still be pregnant? Or is this my period...

Really disappointed..

It’s probably hard to see cause of the light but this was taken within the time frame and the second line to the naked eye is pink..

It’s not heavy bleeding so far or clots , just light pinkish red