I delivered a baby in june n i got an iud for 10 years insertrd in september.now its been more than 20 days, my bleeding has not been stopped. why?

Copper: The 10 year paraguard iud has, as a known side effect, bleeding. Typically it starts out heavy, but does get better with time, however, for some patients it never gets better. I would say, it's only been at most a month. Give it 3-4 more weeks and if still bothering you, consider the Mirena (levonorgestrel) iud. It makes periods lighter than normal. Good luck! sorry this happened to you!