So, A Few Days Ago I Noticed A Small Pimple

So, a few days ago I noticed a small pimple in the corner of my mouth. Nothing abnormal. I get them from time to time. And I usually squeeze at them and then wash them out. But this one just seemed to turn into this like blister, it's literally a whole in my lip area. It hurts so bad and I've never had this happen before. It seems like it's growing(maybe that's just me) almost). I'm terrified it's like herpes or a cold sore. I've never had either one and I'm not sexually active. I'm still a virgin. My questions are what do you suppose it is, and what do you think I should do about it? Thank you for taking the time to read this and respond.