Need Cat help..

It's really hard to tell when they are that young, not unless your a trained vet. Last summer I thought I had a 6 week old female Siamese kitten, the lady that gave me the kitten said that the kitten was a female, exactly what I wanted, then when my kitten turned 2 months old I noticed that she was starting to become a he (If you know what I mean)If you can wait another month you will know on your own what gender your kitty is because that's when their gender becomes obvious.