No, a positive pregnancy test is the sign of pregnancy on the IUD.
If the IUD was in the cervix, it couldn't work properly. If you're pregnant, the IUD must be removed, regardless of whether you want to continue the pregnancy. Then you can choose to continue or terminate the pregnancy. If you choose to terminate, you can have another IUD inserted after the abortion.
An IUD is meant to prevent pregnancy, so when it's in the uterus, you have a lower risk of pregnancy, and when you remove it, your risk goes back to what it was before.
If you leave a hormonal IUD like Mirena in too long, you may not be protected against pregnancy, but there are no other risks. For instance, if you're menopausal and not concerned about pregnancy, there is no pressing need to remove it.
How do you get your IUD removed
It's the same as the procedure to remove the IUD when you're not pregnant.
Pregnancy on the IUD is unusual. Bleeding with the IUD is not a special sign of pregnancy. If you think you might be pregnant, take a pregnancy test.
Pregnancy on the IUD is unlikely. Getting pregnant during your period is also unlikely. Taken together -- it's possible to get pregnant during your period on the IUD, but it would be a huge shock.
The IUD will provide the same protection against pregnancy. As usual, it won't provide protection against sexually transmissible infection.
There are no side effects of having your tubes tied and leaving an IUD in place. There is no pressing need to remove the IUD if you have other pregnancy protection.
Getting pregnant with an IUD in place is rare but it does happen. If you feel that you may be pregnant with an IUD in place you should take a home pregnancy test and/or see a Dr as soon as possible due to possible health risks to you and to the pregnancy.
You can use an IUD anytime you are interested in avoiding pregnancy.