I was performing oral sex on my boyfriend last night and when I looked down, I saw an EXCESSIVE amount of blood. We initially thought he had a serious cut, but it turns out the blood was coming from my throat. There was a pretty copious amount of blood and my saliva was literally all blood and bright red. Could it just be a popped blood vessel? I am a relatively heavy smoker and drink occasionally, but I am concerned because I am only 21 years old. Despite drinking and smoking, I am in good health and didn't feel any pain when I was bleeding. I'm quite worried. Thanks so much.