I believe the little "balls" you are referring to are the pollen sacks on the females buds. I am not sure what the real name for this is, but the sacks swell to invite pollenation from a male. If your sacks are full of seed then your female was most deffinately introduced to a male at some point in time-or, maybe a hermaphrodite??

Some pics would help. And someone else will prolly have better insite if I am wrong. Good luck!
-Pockets