a month or two is a little young....but i'd say just give it another month or two and u should be able to tell. u can tell way before 8-10 months. i've never had a male baby that i couldn't tell by a few months of age. and every suspected female has remained female after a few years of age. u will start to see obvious bulges within a couple of months at the latest, depending on how big they are for their age and how fast they grow.
i think most breeders would tell u they are hard to sex until 3 months of age.