Opinions please (pic included)

I have had this the past few days but only like once or twice a day when I wiped. I would be 11dpo today according to LMP. I'm not sure if it is implantation bleeding or just an early light period. I am on birth control but had to take antibiotics a few weeks ago. I just want some other opinions. My periods usually aren't like this or come this early. Thanks in advance!