Hi, Linette. I'm so sorry you are going through this. They say after a m/c, you must go 20 straight days with no bleeding before AF arrives. They say 4-6 weeks. I got AF 5 weeks after. I know how frustrated you feel. We've been TTC again since January. I've obsessed about it so this cycle I pretty much said "I'm done obsessing". If it happens, it happens but I'm not keeping track of my cycle days, etc.
I know it's hard, but try to relax and enjoy your vacation.