Should Pap smears be offered to those under 25? (Uk)

In the UK Pap (cervical) smears are only conducted 6 months before you turn 25.

This is said to be due to how rare cervical cancer is among those who are under 25 but it still happens.

On a personal note, I was refused a Pap smear by my doctor due to my age, despite having the alarming symptoms which signal a Pap smear needed to be done. My doctor informed me that she could do the test but the lab wouldn't process the results due to my age. Therefore the doctors are still inconclusive as to what is happening to me.

I understand the reasonings below however do you think it's right that women like myself who experience these symptoms are not tested? What if they are not tested and at 25 discover that they have cervical cancer?

Due to the symptoms mentioned below being quite rare and occasional do you think under 25s should be tested only in the circumstances that they have these symptoms?

(sources: NHS.uk and jostrust.org)