In general, [url]hCG injections[/url]https://v-carepharmacy.com/medicine/hcg are given when the follicles in your ovaries are mature and ready to release an egg (ovulation). Your doctor will monitor the development of your follicles through ultrasounds and blood tests, and will determine the best time for you to receive the hCG injection. The timing of the injection is critical because it needs to be given just before ovulation to ensure that the released egg can be fertilized by sperm. It's important to follow your doctor's instructions carefully and not miss the scheduled hCG injection time.