Um was it blood? Then I would have to say that WAS a period. But yeah, if not your period should come soon; since your breasts are developing (though things always develop at different times and rates, it safe to say you're probably on your way). This is fine; your right about average development wise (as you know girls mature faster than guys) and have nothign to worry about, as long as your "vaginal discharge" was something other than blood or other fluids. If it was puss or something like that, then you'd have an infection!