My brush tool only paints like a spray can and I can't fix it

I hadn't changed any of my brush settings and midway through using it, it's changed itself and I can't fix it. I usually like using the hard round brush but now it's stuck looking like I'm using a spray can line and I don't need that. It now doesn't matter how I change the brush tool, it's stuck on this one setting. 

I've tried resetting all of my tools and restarting my computer and it still is broken and I can't find anything else to try. Any help is greatly appreciated