Is this a stress related headache?

Recently I have been a little stressed out, I won't go into why right now, it's a long story and I don't want to spam you all with a wall of text. After I started getting all the stress, well once it started getting worse on my mind, The back of my neck got sore and stiff and I got a headache. This happened 4 days ago, and I just want to know wether it's a stress related headach or not. Thanks in advance. ~~Nick