Brown period

Co

So I know brown towards the beginning or end of period is normal, but have y’all ever had a period that is brown the whole time? Not heavy at all I don’t need to wear a pad but today is like day 4 of this. Only time it gets to wear i need tissue down there is when I’m going to bed. Usually I have i change my pad or tampon every few hours so it’s very light compared to normal and nothing red strictly brown ? Not on BC cause we are TTC. Came after AF was one day late