My head hurts at my forehead. It feels like a lot of pressure. By the way, my period is supposed to come this Friday and it’s Tuesday. I had clear discharge. Other <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period apps</a> said I would get my period the Saturday that already passed, an another(clue) said I would get my period yesterday. This is supposed to be my 3rd ever period(not counting my first one). 25 days usually passed between each of my periods. My last period was June 22nd - June 27th. Could you please explain what’s happening, when will my period come, and why does my head hurt. I’m 13.