Pregnant.?

So some guy came in me n he said he wasn’t going to but he did. I have a iud copper paraguard but he said he will buy me a plan b tmro... idk if I should take it bc I heard it messes with your iud or should I just wait until my period to see if I get it.??

Do I take it the plan b when he brings it or no bc I know he’s gonna bring it to me to take it but should I or just keep it for someone else