Could this be the very start of menopause/ peri menopause?

[Summertime1578]

So, period arrived like clockwork, exactly when due- but very light and very short.
Mid 40’s; I know there may be other reasons and it’s only one month but I wonder if it’s peri menopause?
Any thoughts or experience? Thanks

Oh, and I haven’t had any vaccine due to allergies- in case anyone wonders if it’s a side effect of that. Thanks!

Far too early to say, no matter what other's experiences are.

Just wait and see how the next few months go.