What PCOS can involve
Polycystic ovary syndrome affects how the ovaries work, and it rarely limits itself to periods. Cycles that do not arrive when expected make everything harder to plan, and the other parts, acne, hair growth, weight changes and low mood, are the ones people tend to carry quietly because they feel cosmetic when they are not.
PCOS is also one of those conditions where appointments can feel like starting again each time. A record of what actually happened, across weeks rather than one day, is something concrete to bring, and it shows the parts that are easy to leave out when you are sitting in front of someone with ten minutes.