Pill making me off track?! HELP

Lydia

So I’ve always had regular periods. I got on the pill about 6 months ago. (Lo Loestrin Fe )My body took really well to it until now . I’ve had a constant period for almost a month now. I’ve heard this happening at the beginning of pill but not after half a year of being on it ? Should I be worried and set a appt with obgyn or is my body adjusting to it again? Has this happened to any of you