HPT and implantation bleeding

Can you have a BFN the day you have implantation bleeding? (I hope this is not a really dumb question). 
I tested the morning after I had (what I think is) implantation bleeding, and I had a negative result. I think it is IB because my period is suppose to be in a week.
I'm not testing again, I will wait until I actually have my full period. 

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