Day 10 of flowering. Some brown stigmas?

I don't remember touching the bud and it's not all of them at this point. Just a couple lowers. Is it normal to see something like this after 10 days? I've never ran an autoflower. I had someone tell me it's pollinated but I'm not seeing any pollen sacks anywhere. Humidity around 50% temp 70-78. No spray has been used.

I guess it could be pollen, but I would put my money on some kind of contact. As much as I try to be careful, I end up knocking them around from time to time.

I've heard about contact causing it, but I remember hitting a couple of the upper buds and they're still 100% white. One of the lowers that has the brown tips is tucked away in a spot where it most likely never got touched even by other leaves. If it is pollen those sacks are hiding good or I'm just not seeing them.