Christina Aguilera is going through some pregnancy pains. The mom-to-be has taken ill in Australia and postponed two concerts. Christina was supposed to perform in Melbourne on Saturday, but that concert was moved until Sunday. Now, the Sunday concert has been postponed as well. No word yet on when the date will be made up - if at all. Official word is that she has a fever and has been hit by a bug thats been working its way through her touring crew.