Not really strange, MJ doesnt show her sex easily. I usually don't see preflowers until about week 4-5 if Im growing from seed. So the lower limbs of your plant are just pre mature, basically. The balls have not dropped. And I dont see any hairs on those lower nodes. So call a spade a bloody shovel and declare it officially male. Dont worry, there will be more seeds.

Oh also, let it veg for 2 mos before putting it into flower. They flower much faster/better if you let them get to that age point.