How does having an iud affect the abortion pill. i want a backup?

The pill Not needed: Iud is highly effective...For example: Mirena (levonorgestrel) touts over 99% effecacy! thus adding a morning-after pill is not needed..Benefit is next to nil..Ie..Adding a dollar to your million does not make much of a difference. Nevertheless, this pill should not have an effect on your iud. Adding a condom is much cheaper and safer--reducing risks of STDs etc...If u r still concerned, consult doc..Goog luck.