Um...never. In the year I had it after DS, I tried once and never found them. My doctor did so I never worried. This time, I've had it since January and never checked.
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I never check them. I just "trust" that they are there. The one time I did try to check for them I couldn't find them because they were wrapped around/behind my cervix and my Dr told me to just not worry about it, that they were there and looked good.
Jessie Rose was born on 01/26/10 at 37wks, she weighed 7.9lbs and was 19" long!
Re: IUD users how often do you.....