I have a question. I am 19 years old and my period started on August 1, and I had sex with my boyfriend on August 9. We had protected sex and checked several times that no sperm entered into my cervix. I drank an energy drink yesterday before work and this morning around 2 when I got off of work, I has blood when I wipped after going to the bathroom. I found this strange because we took extreme precautions and the blood is red and not pink or brownish discharge. Please help! I am very confused and it's stressing me to a point where I didn not sleep last night and have had an upset stomach.