No way to tell.
Some babies just suddenly have teeth - with no cranky teething period before. Some teethe for months before a tooth appears. For my daughter, it was usually 2 to 3 weeks. Her very last tooth actually took over 3 months - she started chewing on things, putting them right where that last tooth should come through, in early January but it was early April before the point broke through.
at 5:45 PM on Jun. 29, 2009