Sorry Hun I think you're a wee bit confused. You definitely don't need a frer at 5/6 dpo the earliest you'll get a result on a pregnancy test is usually a couple days before period, that should for another week at least. You really don't want to test to early as it can be a chemical if you get a + before your natural period is due, we're all guilty of testing too early and causing ourselves unnecessary heartbreak. Also, you need to be seen by a doctor ASAP if you are ttc with a coil in, as obviously it's meant to be a pretty fail safe method of contraception but if you think your pregnant this could potentially be harmful to a baby so needs removed ASAP.