Birth control and bleeding

Hi ladies I’m not sure what topic this should be under ..

I am on tri cycle lo 21 day cycle birth control and I’m on the third week second day .

I’ve had spotting for two days now .. not enough for a pad , not enough for a tampon . It ranges from bright blood to a darker blood . My period is suppose to be a week and 2 days away ( that’s when. Normally comes anyways ) my body is feeling very lffcompaired to what it normally does . Has this ever happened with anyone else ?

Thanks in advance ladies (: