Late period with traveling?

Sarah • Married to my best friend 💜 #ttc 1

Hi everyone I usually have between a 26/28 day cycle never ever been any longer than 28 days and I am currently on cycle day 31 with no sign of AF. I got my hopes built up and just test with FRER and BFN :(

I was wondering if the fact that I have a 12 hour flight few weeks ago when I was ovulating would have knocked my cycle out of whack?