My menstrual cycle has been 46-56 days every month for the last 4 months, is that normal?

Hello Anon

Thank you for writing!

It would help to have more information from you (any health problems, your age, any changes in life that could cause stress etc).
If you are over 40, then these changes could be due to peri-menopause. Hormonal changes are common at this age, when a woman's reproduction system begins to change as fertility wains.
Other reasons could be a hormonal imbalance or stress. Changes in health could also be a factor.

Could have of these reasons be pertinent to you?

We look forward to hearing back from you-
Susan