Help me!!!

Kaitlin
I'm on cycle day 74! I've never gone over 33 days. 
I've taken Prego tests and had 2 that had vvvvvfl but the rest have been negative. 
I've had 0 symptoms of Prego and only a few  symptoms of period (mild cramps) 
Help me! I can't go to the doc for another week ... We have been trying for months ... Could I be Prego? 
I've never missed a cycle let alone 2 now!