What is hCG? Beta hCG, tests and levels

Illustration of a person with hands on hips next to a medical shield icon; feature art for “What is hCG?”

Human chorionic gonadotropin (hCG) is a hormone your body makes in early pregnancy. It is mainly made by tissue that will become the placenta after the fertilised egg has implanted in the uterus. Laboratories usually measure the beta part of hCG, so you will often see “beta hCG” on a blood test report. This is … Read more

Conception date vs intercourse date explained

Illustration of a woman presenting a calendar with icons to show that conception and intercourse dates can differ.

Key points Conception means fertilisation near ovulation, not the day you had intercourse. The fertile window usually spans about six days and ends on ovulation day. Sperm can survive in the reproductive tract for up to about five days in the right cervical mucus, so intercourse before ovulation can still lead to conception later. Implantation … Read more

Do Ovulation Apps Work? Evidence, Limits & Better Ways to Time Intercourse

Illustration of a woman comparing an ovulation app on her phone with an LH test; headline reads “Do ovulation apps work?”.

Ovulation “prediction” sounds straightforward, until you look at real cycles. Many popular apps lean on calendar maths, but ovulation varies by person and by month. If you already use an ovulation app or you are thinking about one, this guide brings together what studies and guidelines say, where app based predictions can go wrong, and … Read more