i saw this and just thought i will reply, dont worry, i know its hard to but colposcopy is really not that bad.
i had my first one about 4 years ago because my pap smear came back abnormal due to the HPV, since then, i practically have one colposcopy every 6 months for the next 4 years. everytime it came back abnormal but has not progress worse.
my last one was in july this year and my gyno decided that if the result comes back abnormal again then i will need to have them burnt off (lasered), once and for all.
anyway, results came back its all fine. and he said i dont need to go back to him and just keep my pap smear up.
its not a comfortable procedure (and everytime i had to have a biopsy taken except once), you might bleed a little afterwards, but your gyno should make sure that the bleeding subside before he take the spectrum out. just take it as a very long pap smear (mine usually take about 45 mins, lol, its not a good look)
no knocking out required for me, it shouldnt for colposcopy, but there are a couple of times i felt fainty afterwards and my gyno explained thats normal because the spectrum has been in for such a long time and the uterus normally contracts as a reaction and all your blood pumps there so i felt fainty...
just take it as a precautionary procedure, not neccessarily an alarm.