According to the app, my fertile week was from April 15-April 21 with expected ovulation on the 20th.. I just started tracking my cycles last September and it ranges from 33-37 days with an average of 34 days.. Last April 14th, I played myself and inserted my finger with kinda long nails.. that same night, I had this type of discharge (1st photo below) and the day after I had something like a cervical discharge with a brown stringy discharge (2nd photo below) Is it normal on expected ovulation window? It's my first time experiencing it.. (Last time I had sex was December, I had an ultrasound last March 17th that proves I'm not pregnant which also confirmed my ovulation due to seeing a corpus luteum on the ultrasound.. I had my period March 31st-April 4th then on April 5th me and my boyfriend played with each other I accidentally touched the sides of my vulvar region with my fingers but I was wearing my underwear with a napkin that time.. then I had brown spotting on April 6th and 7th if this helps)

Help? Could this be some leftover blood from my period? Or is this ovulation discharge?