Dark brown discharge soz tmi

I’ve had some dark brown discharge since yesterday night on and off (I know gross sorry for the tmi) almost like old blood it’s such a small amount and only when I wipe, i don’t need a pad or anything and feel like I’m way overreacting. Not in any pain or anything. Had a scan two weeks ago everything was perfect. Just had a panic attack managed to calm myself. Just wondering what I should do? Contact EPU?