Can someone tell me what this is?

Okay so I have a bagseed female plant that is on its third week of flowering. While checking for male signs yesterday I found a grey spot on a bud site at the bottom on new leaf growth. Some of the pistil hairs on the stem are also turning yellow and decaying. The tips and jagged edges of the stems leave are turning black as well. Can anyone help me identify this? None of the other bud sites have this, just that one but I had also dropped a small fan on that stem a couple days ago so could that be the problem? Temps stay around 78 although it got up to 85 a couple days ago and the humidity stays at 40%. Is this bud rot? Or is it a deffiency? Thanks for the replies

Could just be from fan dropping which damaged or bruised it...just keep an eye out on it...is it everywhere or just where fan hit it?

I think thats just some dmg from the fan dropping on the top unless you're able to tape it up straight again its gonna be some time before it gets the strength to stand up on its own.

It doesnt seem to be spreading anywhere so I think yall are right. Also the hairs are turning red on some of the bud sites but I dont see any seed pods. Ive checked up and down her and nothing, what might that be? Thanks again for the replys, this is my first grow lol