i’m on a combo birth control pill and i take it usually within the same 2-3 hour time frame every night . but 3 days before my placebo pills i had brown bleeding and it’s been happening for two days so far with some red too , should i be worried of this being implantation bleeding or can this happen sometimes ? i’ve been on the same pill for well over a year. I usually start the bleeding 1-3 days into placebo . is it possible that this is just early bleeding by chance ? i’m having period symptoms such as headache and low level of cramps and fatigue. .