There's nothing to worry about. Every baby is different and you can't really compare one baby's growth and development with another. Some babies are late teethers. If your baby is otherwise quite active, playful and has also hit his one-year milestones, perhaps there is nothing to worry. I found this informative article on late teething. Hope it helps in solving your doubts :) http://www.livestrong.com/article/499755-reasons-for-late-teething/
Yes! My older son's first tooth popped out when he was 13 months old. Don't worry - those pearlie whites will pop out soon :)