What are your thoughts IB or AF?

Mrs A ✨ • Guess who’s back?! Baby #3 on its way 🍼👶🏾 October 2019 🙏🏾
So I have three apps which often means I have 3 different start dates for AF. I usually wait for the latest date before I start think "could this be it".
So this month I was meant to start between 25th & 27th, however on 24th I had some light pink spotting so I thought ok AF is here but then there was absolutely nothing.
25th nothing 26th nothing & today is 27th there's nothing as of yet but I'll give it until Friday before I take a hpt.
I don't have any other pregnancy symptoms but I am often tired.
I've never had isolated spotting before so I wonder could it be?
I don't want to get my hopes up until I take a test but I just also wonder if anybody else has experienced this before.