Congrats with your new cup! Before using your cup, it is important that you sterilize it. You can do this by first washing it well with soap and water, and then boiling it in water for 5 minutes. An easy way to boil your cup is to put it in the microwave for 5 minutes.After that you can use your cup for the first time. As with many things, chances are it will be a bit rough the first time. But don’t worry, practice makes perfect! Practice inserting and removing the cup a few times before your period starts. If it doesn’t go smoothly right away, check it out; it can take 2 to 3 menstrual cycles until you are completely comfortable with the cup.