Birth Control question????

Nikita

I recently started back on Birth Control pills after 4 years of being off. I am on week three and I haven’t stopped bleeding (light to medium) since I started taking them. Also the past 5 days I have cramped so bad I have missed work. It’s hurts non stop. I am taking meds to relieve the pain. It’s helps a little bit as soon as it wears off, the pain is back full force. My doctor isn’t concerned right now. Is this really normal?