Period cycle and days!!

Hello ladies I don’t post often!

I been having for the last two months a abnormal period!!

Before this my periods would last me 7-8 days max, first 3 days were heavy, then the rest would get lighter and by the last day it’s brown discharge!

I started getting my period every two weeks like if it was a paycheck and it would only last 5 days 🤔😂 but then this month I did get it with in 28 days of my last period. This month my period started very light, second day a lil heavy but nothing like before! Today is my 5th day on it and it’s super light! My friend tells me I could be pregnant but I don’t actually feel pregnant! I have a 5 year old son!

My question is does your body change with in time of how long period last and cycle does it change??