Late period (spotting) can I count that??

[Hawthorne1990]

I have read too many times not to count spotting BUT hear me out.

So on expected period I spotted brown jelly discharge for 2 days. Then 3rd day full flow.

Instead of being a 5 day period it was 3 so it ended exact same time my period would have finished if it came on time!

Now I'm having cycle days that are 2 days behind my last cycle for example: last month I started getting creamy and watery cm at CD21 this month I got that same Cm at CD19 but had my period come on time I would be actually CD21

Please tell me someone understands as I'm stressing so much.

Technically you'd have to take the day with full flow as cycle day one. Sometimes our cycles are a bit wonky, and yours is only two days off - we're no machines after all :)
You're not using OPK or BBT I understand?