what is this?

I woke up, did my makeup and hair and as I was combing it I felt a few bumps on my neck, so I took a mirror and this is what it looks like:

I never had this before and I'm kinda freaking out. They're like little pimples, I accidentally popped one of them when I ran my hand across it and it was full of puss.

I washed my hair yesterday as normal, I didn't use any new products but I did use a DIY mask (mayonnaise, egg and cinnamon) and I'm thinking maybe the cinnamon somehow got on my neck and caused the irritation? I don't know what else it could be, and I'm really scared it's something more serious. I'm gonna go to the doctors if it doesn't start showing signs of going away within a day or two, but the wait is horribly long (we're talking months) so I doubt I'll get there fast enough to get treatment.