If i'm under the age of 18, can i have my doctor remove my iud without parental consent?

It depends. Some states have laws on the books that allow minors to have access to and seek sexually related care/birth control/STD services on their own. Be aware if you use a parental provided insurance that they would receive notification from the insurance company for any encounter you made under that plan. It would say to who and likely what procedures were covered.