I’m on day 4 of my fertile window and I woke up to this weird spotting. I’ve felt tired and nauseous for a few days now. I had my period a little over a week ago. Could this just be old blood? I took a pregnancy test because my bleeding was light on my period and it was negative. It did get heavier as it progressed and lasted longer than normal. I am going to go see a OB, I’m 19 and don’t have a regular one. My fiancé and I did have unprotected sex but it was about 3-4 weeks before my last period was due. It came early so I didn’t think anything about it. Has anyone experienced this? Could I be pregnant?