- How accurate is this calculator?
- It provides estimates based on standard medical formulas. Ultrasound dating is most accurate (±3-5 days), followed by due date (±1-2 weeks). LMP is least accurate for irregular cycles.
- Why is there a conception date range?
- Because sperm can survive inside the body for 3-5 days, conception could have occurred on any of those days. The range covers this fertile window.
- Can I use this if I have irregular periods?
- Yes, but the Ultrasound method will be much more accurate than the Last Menstrual Period method for you.
- Does it work for IVF?
- For IVF, you likely know your exact transfer date. You can use the 'Due Date' method if your doctor gave you one, or simply subtract 266 days from your due date for a rough conception estimate.
- What if my due date changes?
- Due dates often change after an early ultrasound. If your doctor gives you a new due date, simply re-enter it into the calculator for updated conception estimates.
- When does the first trimester end?
- The first trimester ends at the completion of week 12. Week 13 marks the start of the second trimester.
- Is it safe to exercise?
- Generally yes, but always consult your doctor. Our tool provides general guidelines for safe exercises by trimester.
- What foods should I avoid?
- Common restrictions include raw meat/fish, unpasteurized dairy, and high-mercury fish. Our calculator offers specific nutrition tips.
- How often should I check this tool?
- Weekly check-ins are great to see new development milestones and get tips relevant to your current week of pregnancy.
- Can it predict gender?
- No, gender is determined at conception but can only be revealed by medical tests (ultrasound/blood test) later in pregnancy.
