nuvaring

So I've been thinking of switching from the pill to nuvaring because I'm always forgetting to take the pill and figured this would be a better option. I have a few questions about it though. is it possible to insert it too far up and not be able to get it out? Also I've read a few posts saying that you can take it out for up to three hours and still be protected from pregnancy, so does that mean I can take it out before having sex and put it back in right after? And has anyone had any bad side effects they're willing to share about? thanks :)