<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have been taking Lutera birth control pills for almost 3 months now and this is the first time this has happened. I had my period about a week ago 823-830 and I m still bleeding , except it s a stickychunky, thick black colored blood , almost black! Is this normal? If it keeps going on, should I see my doctor and change BC?  <response>: Hi, thank you for your query. What you are experiencing are the classic side effects of Luther birth control.a lot of women experience Vaginal bleeding between periods spotting or missedirregular periods may occur, especially during the first 4-5 months of use. This along with clots, passage of dark-colored blood is seen. There may be associated nausea, vomiting, headache, stomach crampingbloating, dizziness, vaginal discomfortirritation, increased vaginal fluids, or breast tendernessenlargement.I would advise you to consult your OBGUN to change the birth control method to a more suitable one. Thank you, wishing you good health 