IUD —> birth control pill

Abby

I got my IUD put in December 26th while still on my period but got it taken out within about two weeks due to pain. I continued to bleed the entire time, although my doctor said it was normal because the IUD makes you shed all old lining before stopping the bleeding. Now that it’s out and I’m on the pill I am STILL bleeding. Ive basically been bleeding for approx 4 weeks straight. Is this normal? What should I do? Has anyone else experienced this?