first month ttc

This is my first month off my bc. Had I taken my pill I would normally have af start this Friday however glow thinks it should start today. I have no idea what a normal cycle w out bc will be like so I'm trying to ignore glow and wait til at least this weekend. What would you all think? Wait it out to test? I don't want to spend money on tests when af is truley not even due yet possibly...What was your cycle like first month ttc after bc?