Faint positive day after period was due

Nicola
Im trying really hard to be rational and not get too excited. We were trying for a long time and never even had a positive so... Please please please I need prayers or baby dust or anything you can send my way. I need this to stay a valid pregnancy. Every twinge or light cramp has me going crazy and checking my knickers for bleeding. 
​Ahhhhh. I need to chill.