This is just happened to my sister, but she is now 5 weeks late and not UTD the doctor just said that she must have missed a cycle.... WTF we arent ment to " just miss a cycle" for no reason.... I told her to go back to the doctor this week but she is waiting until thursday as this is when her next AF would be due... I hope you get more answers than what she has been getting....

Go to the doctor find out WHY AF hasnt turned up yet.... She is meant to come once a month so I would be getting BT just to see whats going on....

Sorry it wasnt the news you were hoping for