Funny. I was at my OB/GYN just today and the poster on the wall said the IUD is 99% effective. There's always that 1% but I highly doubt it. Don't panic, these are also symptoms of the stomach flu or some virus. You are more likely to have a virus than be pregneant.

Please see your doctor for your safety.

Yes you can be! If you become pregnant with an IUD in place, your health professional may recommend that the IUD be removed.

Call your health professional immediately if you have any of the following symptoms. Remember the word "PAINS." Each letter stands for a wo...

Please see your doctor for your safety.

Yes you can be! If you become pregnant with an IUD in place, your health professional may recommend that the IUD be removed.

Call your health professional immediately if you have any of the following symptoms. Remember the word "PAINS." Each letter stands for a word associated with a problem:

Period is late with a copper IUD, or you have abnormal spotting or severe bleeding.
Abdominal pain, severe cramping, or abdominal pain with sexual intercourse
Infection with or exposure to a sexually transmitted disease (STD) or symptoms of a vaginal infection, such as abnormal vaginal discharge
Not feeling well or having a fever of 100.4°F (38°C) or higher
Strings from IUD are missing or are longer or shorter than normal
Call your health professional to schedule an appointment if you:

Cannot feel the strings of your IUD. (Use condoms as backup birth control until your health professional has checked your IUD.)
Have severe or prolonged vaginal bleeding.
Miss a menstrual period, unless you have the LNg IUD. It is normal to miss a period or stop menstruating while you are using the LNg IUD, and this is not a cause for concern.

Pregnancy with an IUD

If you become pregnant with an IUD in place, your health professional may recommend that the IUD be removed. This is because the IUD can cause miscarriage or preterm birth (the IUD will not cause birth defects). Taking out an IUD early in a pregnancy lowers risks of miscarriage or preterm birth. However, IUD removal can also cause a miscarriage. As a pregnancy progresses, miscarriage risk is lower if an IUD is removed than if it is left in place.1

When to call your health professional
When using an IUD, be aware of warning signs of a more serious problem related to the IUD.Please be advised we are NOT doctors on this site. The person that can tell you what is wrong is your doctor only. There is a old saying "It is better being safe than sorry" which holds very true in your case, please see your doctor.

Well, its probably safe to say that your about 99% NOT pregnant, but theres always that 1% chance that the birth control failed. But it caould also be that you have a bad cold or the flu of some sort and are just not feeling well. But to be on the safe side I would go see your Doctor as soon as possible to rule out pregnancy.
Good Luck & Take Care!