Which tool should you use?
| Your question | Start here | What you’ll need |
|---|---|---|
| Why is my period late? | Late period checker | Your last period date and any recent changes |
| When is my next period due? | Period calculator | Your last period date and usual cycle length |
| When might I ovulate? | Ovulation calculator | Your last period date and usual cycle length |
| Is this spotting or my period? | Implantation bleeding vs period | The timing, amount, colour and length of the bleeding |
| What helps my cramps? | Cramp relief planner | Your pain level and how it’s affecting you |
| Is my discharge normal? | Discharge decoder | Its colour, texture and any other symptoms |
| What does this colour mean? | Flow colour photo check | A photo of a pad, liner, tissue or cup |
| What’s my pattern over time? | Period tracker | A minute or so whenever you want to log something |
How these tools work together
The calculators give you a quick answer from a single date. The checkers compare what you’re noticing with published health guidance, and they tell you clearly when something shouldn’t wait. The tracker keeps a record over time. If you’ve logged your periods, the calculators fill in your dates for you, so you don’t need to type them again.
You can share a result from the calculators and checkers. It only goes where you send it. Every tool also shows its sources, and you can read how each calculation works.
These tools give general information. They can’t diagnose a condition or confirm a pregnancy, and their predictions must not be used as contraception.