Hello, Thank you for your question and welcome to Health Care Magic. I understand your concern. It sound like your friend got nervous about inserting a tampon for the first time. The condition you are describing shows that the reason why your friend fainted is due vasovagal reaction, which is a disorder that causes a rapid drop in heart rate and blood pressure, resulting in decreased blood flow to the brain and fainting. Heightened emotions, such as panic, nervousness or fright, including seeing blood, inserting a new object on vagina, may cause a vasovagal attack. I would recommend to your friend that the next time she uses a tampon, she must take a deep breath and be relaxed. Hope I answered to your question. Best wishes, Dr. Ina