Its too early pal
You're in the stretching phase before going into pre flower. Some fems ran for a good few weeks will show sex like this just starting. 1-2 more days you will see signs of hairs.
This is in relation to an auto from Fastbuds..mate they don't do reg autos. They're all fems. And even seeds marked fem a small % will throw out a sac (hermie) and i think its like 1-1000 that youll get a male (THAT'S IN FEM SEEDS, STRONG BEEDING BACKGROUND) YOU won't see male autos from fastbuds
In 7-10 days. You'll see bracts..you should see single balls with 1 hair. (Few sacs without hairs are hernies and very rare with fastbud seeds.