Period or not?

Olivia

So I am due for my period today. Yesterday I had some very light spotting. I assumed it was the start of my period so I threw a pad on. However it never got heavier and nothing ever went onto the pad just when I wiped. Today the same thing is happening. It’s weird to me that it’s not getting heavier. I normal have Maybe a day but usually less of light spotting and then my period starts full blown. Thoughts? We are actively TTC.