So my period was supposed to begin on the 6th? It's now the 11th and nothing. Since removing my IUD in April I've been pretty regular? Glow just moves the date back two days? Does anyone know why that is and how late is late enough for me to worry? I did take two test which were negative so I don't think I'm pregnant- more worried about if something else is going on? I did make an Dr. Appt  (just for annual check up) but earliest is a month away so just asking....