All technical guides and articles
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How to Calculate Your FET Due Date (Day 3 vs Day 5)
Learn how frozen embryo transfer (FET) due dates are calculated from transfer date and embryo age, Day 5 adds 261 days, Day 3 adds 263, and why this differs from LMP dating. Use PanaKit's free IVF/FET calculator.
Gestational Age vs Fetal Age: Why Your Weeks, Scan, and Due Date Don't Match
Gestational age starts from your last period; fetal age from conception, about two weeks less. See why dating scans change due dates, and what 8+4 means.
How Many Weeks Pregnant Am I? Simple Calculation
Work out how many weeks pregnant you are from your last period or due date, and understand why your own count and your doctor's sometimes don't quite match.
Implantation Bleeding: What It Looks Like, and When to Test
Spotting and wondering if it's implantation bleeding? Here's how to tell it apart from a period, and why testing too soon can give you a false negative.
Best Way to Track Ovulation: BBT vs OPK vs Calculator
Confused why your ovulation tracking methods don't agree? Here's what each one actually measures, and why combining two works better than relying on one.
When Was I Conceived? How to Calculate Your Conception Date
Curious when you (or your baby) were conceived? Here's how to calculate it from a birthday, due date, or last period, and why the math can seem confusing.
How Often Should You Have Sex During Your Fertile Window?
Once you know your fertile window, timing matters less than you'd think. Here's how often to have sex, which days matter most, and what the research actually shows.
When Do You Ovulate? Ovulation Day by Cycle Length
Find your estimated ovulation day based on your exact cycle length, from 21 to 35 days. See the full day-by-day breakdown and calculate your own dates.
Can You Ovulate While Breastfeeding? What to Watch For
Yes, ovulation can return while breastfeeding, often before your period does. Here's the real timeline, why breastfeeding delays it, and the signs to watch for.
Ovulation After Stopping Birth Control: What to Actually Expect
Most people ovulate within their first cycle off birth control, but timing varies by method and person. Here's the real timeline, the signs to watch for, and how to use an ovulation calculator accurately during this transition.
Can You Get Pregnant on Your Period? Chances, Risks, and Expert Advice
Can you get pregnant on your period is a common question among women who are not sure about it. Although, many people believe that having sex during a period doesn't result in pregnancy, this is not true.
Is Cramping Normal in Early Pregnancy? Causes, Symptoms, and When to Worry
National Health Service (NHS) suggests that if you experience stomach ache or cramps during pregnancy, it is very normal. Moreover, the cramps improve with time, rest, or changing positions.
What Is a Chemical Pregnancy? Symptoms, Causes, Real Experiences, and Expert Advice
The chemical pregnancy doesn't show on ultrasound and ends early with low human chorionic gonadotropin hormone present in the blood or urine.
Best Pregnancy Weight Gain Calculator: Know What's Healthy and Recommendations
It is one the best pregnancy weight gain calculators, suitable for those who want to track muscle gain, weight gain, and nutrition.
When Do Pregnancy Cravings Start? Timeline, Real Experiences, and Expert Insights
When do pregnancy cravings start is a basic question every expectant woman has during her pregnancy.
How Pregnancy Due Dates Are Calculated: Methods, Formulas, and Accuracy
Your estimated due date can be calculated four different ways — from your last period, conception date, an ultrasound scan, or an IVF transfer — and each method gives a different level of accuracy. Here's how each one works.
How Can I Calculate My Due Date of Pregnancy? Best Methods and Examples 2026
How can I calculate my due date of pregnancy is a major concern among most women. Usually, the baby comes out at 37 to 42 weeks.
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Common questions
Quick answers to what people usually ask before diving into the guides.
What is the difference between a guide and a calculator?
A calculator gives you an instant date or number. A guide explains why that estimate works the way it does, when it applies, and what the result means in context — for example, what counts as normal cramping in early pregnancy, or how due-date math actually works.
How are PanaKit's guides different from a standard blog?
Every guide on PanaKit is connected to a specific calculator or topic. The goal is not to publish content for its own sake — it is to give useful context for people trying to conceive, tracking a pregnancy, or understanding their cycle.
Can I use PanaKit guides for medical decisions?
PanaKit guides are written to be accurate and practical, but they are educational content, not medical advice. For diagnosis, dosing, or any urgent symptoms, always consult a licensed clinician.
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