I had a 11pd 2 oz bubba who was 59.5cm long (my last scan 2 days before birth showed him as being about 9lbs), with minimal tearing & no drugs. My GP said that if the hospital had known how big he was going to be I wouldn't have been able to birth there, I would have had to go to a bigger hospital. I can honestly say he was much easier to deliver than my first, and she was only 9lbs..
Don't let the thoughts of size get you down. xoxoxo