Need ideas

So on about 4 days of very light spotting just enough to make small marks on my underwear or pad n mainly is only when I wipe m it still is only faintly there n it is only light pink or sometimes brown ish but I honestly haven’t ever had spotting only if I missed taking a birth control pill for a couple days. I haven’t been on birth control in years. I am sexually active n ttc. My friend that I work with thinks it’s stress because we work as cnas n we have been short n been working this last week pretty hard n we are both kinda burnt out but I have worked this hard before n I haven’t had this happen before so I don’t think it’s stress