Level 1: What is pregnancy? Pregnancy refers to the process in which a fertilized egg implants in a woman\’s body and develops into a fetus. Generally speaking, women ovulate during menstruation, and if they have sex and fertilize during the ovulation period, it is possible to become pregnant. After pregnancy, a woman\’s body will undergo a series of changes, such as breast swelling and pain, nausea, vomiting, etc. Level 2: How to tell if you are pregnant? Usually, women can judge whether they are pregnant through the following methods: 1. Pregnancy test stick: This is the simplest and easiest method. Just need to buy