Am I Out This Month ?

My cycle last month was weird going from July 4 to July 16 (I know long as heck) then spotting til the 26th. i thought since it was so weird i was out of the ttc group for the month. Me and my fiancé had sex th 26 thru the 31st and now AF is 5 days late. I'm not rushing to get my hopes up because I'm not sure how likely getting pregnant a week before your period is due is. Is it possible that my unusual period last month will cause me to miss it this month? am I out of the ttc group for August as well?😢