Cold sore or pimple?

I’ve never had a cold sore in my life and have been with the same guy for almost 6 years (not even remotely thinking anything negative here). I noticed it all of a sudden yesterday morning thinking it was a pimple and then when I got home tried to pop it. I’ve been putting Say Yes To pimple stickers on it all day. I’m a major hypochondriac and freaking out that this could be a cold sore.

Update‼️ Still convinced it’s a pimple? The upper lip is affected now as well