Air travel effect cycles?

MrsSJWalster
Myself and hubby recently visited America. I was due to ovulate whilst out there. I have a 29dc and normally like clockwork at most a day late. 
I was due my AF on the 30th. I took a test that day BFN. Assumed AF would arrive 31st - She didn't. So I tested again today and BFN. So WTF!!!  I'm sure I can see a pink line, but I'm likely Evap.. I had a go look again feeling just wishing it had changed :( 
So I suppose I'm asking if 23 hours in the air in total changed my cycle?? 

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