worried about brown vaginal discharge

maybe im over reacting but i could use some advice either to find a solution or to stop worrying

for the last couple of days ive had brown vaginal discharge, mostly thin but occasionally thicker, initially i thought it could be just after my period, but now im well into ovulation. theres no pain or bad smells. im not sexually active so not an STI or pregnancy.

i just have no idea what this is, whether i should do something or if it could be anything bad. so if anyone is able to help out i would really appreciate it

if you think its something bad you should go ask a doctor and have them check it seems like it could be old blood after or before a period