Cat Whiskers

I apologize in advance for probably just being paranoid, but cats conceal issues so well that I felt the need to ask.

I have two cats both under 3 years old, and my 1.5 year old female long hair tortoise shell cat has shed 4 whiskers in the last week. Granted her long and plentiful whiskers are one of the first things I noticed about her, but in the last 1.5 years of having her I have only ever found one whisker, then I found the first in a while last week, and then FOUR this week. I saw lots of comments about how 1-2 is normal, 3 I wasn't concerned yet, but after 4, I just wanted to ask if this could be representative of a larger issue. Her health seems to be great otherwise, and if anything shes been more perky lately. I did find two of them next to her favorite little pop up tent that she loves to rub against everyday, but its made of a very soft, thin material that I can't assume is rigid enough to be causing this, though it could be. None of her whiskers are shorter than usual nor look rubbed. It's clearly not an urgent situation, but I know that may not rule out allergies, imbalances or whatnot and I would do anything to make sure my literal child is happy and healthy. Thank you for advice & let me know if any additional information would be helpful!