Your thoughts please...

So I had my son in June. I breastfed for 4 months and had my first period at 3 months postpartum. It was a lighter flow than I’m used to and only lasted five days. I’ve never had regular periods in my life and they’re almost always miserably heavy and painful.

I was due for a period around the end of October and it never came. November 6 I had light spotting then it stopped. And now today nov 18th I have very very light pink spotting since this afternoon but only when I wipe.

I’ve taken 3 or 4 pregnancy tests in the last 2.5 months and all have been negative 🤷‍♀️ all were pink dye except the last one..and that result looked a little weird so I’m not sure it was valid (the dye was kind of streaked across the screen). This one was just last week.

Is this just normal cycle behavior some having a baby/coming off breastfeeding? Could I be pregnant and testing too soon or have false negatives? It’s just not normal for me to spot in place of a period or between periods. 🤔

What do you think??