Please bear with me, details are crucial here. My period was supposed to come yesterday. I felt normal PMS symptoms and bad cramping right around 3:00 so I put a tampon in. I took it out at 7:00 to check it and there was hardly any blood on it but it was red. I decided to just put a pantyliner in. I checked that about an hour ago and there was no blood on it. I am scared to death that this is implantation bleeding and not my period. I am usually bleeding more than this by now. My last period was completely normal. My boyfriend and I have never had unprotected sex. We use condoms every single time and I even fill them up with water after to make sure there are no tears. I am also on the pill and have been for 5 years. I take it at the same time every day and I am not on any medications that would affect it. He never even ejaculates inside of me, never. We are so careful, I don't know how this could happen. I am so worried about getting pregnant, that is why I take so many precautions. I don't have an HPT or I would take it for peace of mind. I called a nurse and she said I should take one in the morning if the bleeding doesn't get heavier by then. Won't that still be too soon? I am having the usual cramping and moodiness associated with my period but I have never had the lower back pain that I am having. Besides some strange upper back pain, I have no other symptoms of pregnancy. I have never been so upset or scared in my life. I can't stop shaking and crying. How could I possibly be pregnant?? I have never heard of someone being this careful and getting pregnant. Is this happening because I was already stressed out or could I be? I doubt I will get any sleep tonight but if anyone has been here, some kind words would really help me calm down. I should add that I am almost 22 and a responsible adult. I am not some teenager that was stupid and didn't think about what he/she was doing.