Anyone else experience this?

So I had my implanon taken out in feb as I was bleeding for 2-3 months after having it in a year. After taking it out I was still bleeding for three weeks after, now in April I had bleeding for three days then it stopped ( I assumed that was my first period since using BC) so I've been tracking and trying to fall pregnant however today being the day I was meant to be ovulating I just noticed on my pants I've got some brown/ bloody stain. It's not a lot just abit of spotting.. Is this my period again?? Does anyone know when it will return to normal. I'm not on any form of birth control anymore and it's been over 2 months since I've had it taken out. I'll post a pic of the calendar I'm using to track it.