How do hospitals generally monitor the ovulation period

Patient's question:

Patient gender: Female
Patient age: 30
How to monitor ovulation at the hospital

Doctor's answer:

Here is the English translation of the provided content, with line breaks retained as instructed and all Chinese text translated into English:
1. Cervical Mucus Method: In the gynecology department of a hospital, this method involves examining cervical mucus to determine if you are in your ovulation period.
2. Basal Body Temperature Method: Measure your temperature every morning after waking up. Generally, your temperature is lower in the first half of the day and drops even further during ovulation, then gradually rises afterward.
3. Cycle Length Calculation Method: Many women are unsure of their exact ovulation day. Using the formula below, after some testing over time, it’s easy to calculate.
Calculation Formula:
- First Day of Ovulation: Cycle Length (in days) minus 18 days
- Last Day of Ovulation: Cycle Length (in days) minus 11 days