I’m 19 and recently I’ve noticed some long dark hairs growing on my neck. Just one here and there but they grow to be an inch long before I find them. I just pluck them and find more a few weeks later. I know it’s not uncommon for that to happen to girls but not sure if it’s common for someone my age? I’m not on birth control. I am on lexapro which messes with hormones. When does it become an issue that I should see a doctor for?