45 days into veg and plants showing sex?

I have a few bagseed that are around 45 days into veg. two of them are showing sex already. I guess I was jus curious if this was normal, a strain, or a stress thing. they're on an 18-6 schedule. all seeds came from the same bag. is it possible that there's a auto trait coming out in 2 of them? I guess all I can do is wait n see if she keeps flowering. n e help appreciated

Hello there, I vegged my plants for 3 months and I also had signs of sex about a month or so into veg they started to show the pistals for me. All my seeds were fem seeds.