Hi Enigma

That is very early. Up until about 14 weeks it is very difficult th tell the sex of a baby. The sex organs do not usually start to delveope in male/female until somewhere around 10 weeks. However, like everything it is possable for one baby to develope faster that what i considered 'normal' (I hate that word but dont know another one to fit).

Just remember, prior to about 10 weeks the genitalia look the same on both male and female