Is there a risk of inexisting after 4 hours after inserting the insert?

Hi, since Wednesday I have put on the insert mirena. The doctor after the assumption said that it will only begin to work after 7 days. He has not said anything since he was able to live. And immediately about 4 hours after the assumption I had a secured relationship. I read that you have to wait. What can this result in? Moving this inlay? I would add that it feels good and nothing hurts me. Such a leciutkie pain of the lower abdomen, but he said that this can be ...