- Please always read the instructions on pack and in the leaflet carefully before use.
- Always test using the first urine after your longest sleep.
- You need to know your usual cycle length before you start to ensure you test at the right time to find your high and peak fertile days.
- The day your period starts (first day of full bleeding) is Day 1. Your cycle length is the total number of days from Day 1 up to and including the day before your next period starts.
- Once you know your cycle length, use the table below to find out when to start testing:
Your cycle length in days | 21 or less | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 or more |
Start testing on the day under your cycle length | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 20 days before your next period |