Odd period (and late) and fertile CM after AF

Lottie • 🇬🇧 Married ❤💏 TTC #1

Not sure where to post this but this seemed as good a place as any. So, this month my cycle was 34 days. Usually 29-30. AF has been very light, literally couldn't even wear a light tampon it was that light. This month AF has almost lasted a week too. mainly just spotting last couple of days. Usually lasts about 4 days. then today, what looks like fertile CM and very light pink blood. never have fertile CM at this time of month and so never had that before and that sort of pink colour too in the 18 years of periods! could be mistaken for IB (from posts ive seen here). pretty sure I'm not pregnant as done tests before AF came where it was late and 2 BFN. sore boobs, dizzy, indigestion, and very tired for approx last 6 weeks. anyone had this before or know why it's like this? maybe it's just an odd month for no reason?