Ladies who use the ring...
So I'm coming back from my summer abroad, and it's been 2.5 months since I had sex.

I was supposed to remove my Nuva Ring on Sunday night and have my period this week, but I really don't want to be on my period when ktspktsp and I have wild reunion sex this weekend (my cervix gets really sore and we have to be all careful and stuff... not as fun).
Before I left for the summer, my doctor said that it was okay to leave the ring in for up to 4 weeks, if I wanted to alter my cycle (and not be on my period in Africa). I didn't end up doing that, but I'm leaving it in this week (4th week) so that I can delay my period till next week. Has anyone done this before? Or if not, do you have an opinion regarding messing with your cycle? I figure it's all artificially regulated anyway, so it should be okay, but just looking for other people's experience.
Oh, and we use condoms all the time anyway, so the protection issue isn't as big of a deal (though the ring is supposed to be fine for 4 weeks anyway).