Hey buddy đź‘‹
From the photos, it’s too early to say for sure — at 28 days in 18/6 veg, plants often show stipules and early node growth that can be confusing.
What you’ve circled looks more like:
• normal node structure
• stipules / new growth
• early preflower development, not sex expression yet
I don’t see clear male balls at this point. No clusters, no round sacs forming — so that’s a good sign 👍
If it’s fem genetics, chances are it will declare female later, but right now it’s simply not mature enough to confirm.
My humble advice:
• keep vegging as normal
• don’t stress or change anything yet
• check again in another 1–2 weeks or once you flip to 12/12
Sex will become obvious soon enough. For now, nothing here looks alarming 👌
Just my humble opinion — others may chime in too.