I have the copper coil.. however a few months ago I noticed I could only feel one string suddenly and went to the doctor thinking it might have moved out of place. They examined me briefly and said as long as one string is visible it's all fine. I've been worried since though. Now my period is 8 days late and I'm usually regular. I'm very tired and have painful boobs. I've done a bunch of tests and all were negative including this morning with fmu, but just did this one and the line came up straight away. But I'm thinking it may be a false positive because of that streakyness to the side of it? I've ordered some FRERs to come tomorrow but just wanted opinions on this as I'm freaking out a bit. I would love another child one day but now would not be an ideal time!