Hi Charlie, sorry to hear your news.
Having gone through natural mc at 11 weeks over the last 24hrs I'd actually say it wasn't as bad as I was expecting, painful yes, but not the worst pain ever. If I had a choice though I'd have probably gone for a d&c, mainly because I wouldn't want to hang around waiting for it to start. Have had 3 different ops under general and like the others say before you know it you're waking up in recovery.
Hope whichever route you chose it all goes smoothly for you and you get a super healthy bean next time xx