My friend is 21 years old.She has a boyfriend and they are in a relationship for two years now.Yesterday she asked me a strange question-What does implantation bleeding look like?I couldnt answer her as I myself was unaware of it.She told me that she is fearing pregnancy after her last night with her boyfriend.So she wants to confirm from her sources.I want to help her so I want to know from those who have experienced it in their life.Thanks!