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Ok ok, so I got the iud (copper) a few weeks ago. And now I keep bleeding after sex, sometimes just spotting other times heavy. I'm not sure if this normal or not. Has this happened to anyone else?

Probably nice to note that I had sex the day after I got it, my doctor didnt tell me how long to wait, and I also did a lot of running the day I got it, like right after I got it. Help? Thanks