Period question!

So after having my son August 2017 my periods have been very regular since my 6 week appointment. My periods are still text book ( the day my app says it will come) but they have become light and short with no pain at all. Last cycle my period was only like 2 days and hardly anything on day 2. Day one was a medium flow day. 🤯 I have peed on so many sticks it ain’t funny (wondfos) first responses before the bleed. Today I am cycle day 8. Started the bleed at 14 dpo ( the 15th) I’m 27!!! What’s going on!!!