Comprehensive Calculator Guide
This calculator finds your last Clomid (clomiphene) pill and the days you’re likely to ovulate after it. With a period starting 1 November 2026 and pills on days 3–7, the last pill is on 7 November and ovulation is expected between 12 and 17 November, most likely on the 14th. It also suggests when to start home ovulation tests.
How Clomid works and medical follow-up
Clomid is a prescription drug that stimulates ovulation, often for PCOS or irregular ovulation. It’s usually taken for five days early in the cycle (from day 2, 3, 4 or 5), and ovulation tends to follow 5–10 days after the last pill, most often around day 7.
Doctors often track the follicle by ultrasound and may check progesterone after ovulation. Clomid raises the chance of twins to about 5–10% and is used for a limited number of cycles.
How to Use
- Enter the first day of your current period.
- Choose the day you start the pills, as prescribed.
- Press “Find ovulation” to see the last pill, the ovulation window, the likeliest day and when to start tests.
Formula Used
Last pill = period start + start day + 3 | Ovulation usually 5–10 days after the last pill, most often day 7
Practical Examples
- Example 1
- Period 1 Nov 2026, pills days 3–7: window 12–17 Nov, likeliest 14 Nov (cycle day 14).
- Example 2
- Period 10 Dec 2026, pills days 5–9: window 23–28 Dec, likeliest 25 Dec (cycle day 16).
Important Tips
- Start ovulation tests three days after the last pill.
Common Mistakes to Avoid
- Taking Clomid without a prescription and monitoring.
Frequently Asked Questions
- When do you ovulate after Clomid?
- Usually 5–10 days after the last pill, most often around day 7.
- When should I start ovulation tests on Clomid?
- About three days after the last pill, then daily.
- Does Clomid cause twins?
- It raises the chance to about 5–10%, against 1–2% without it.