I recently had a very small (maybe 1 mm) sized clear bump or blister inside my lower lip
where it is soft tissue (not visible unless lip
is pulled down).
I was able to pop the bump
/blister and it bled slightly for a little then stopped (there was no pain when I popped it or it was VERY slight that I didn't notice). I don't think any fluid came out, but I'm not exactly sure since it was clear. I'm thinking it's a cold sore (Herpes 1), but I did not have any of the typical symptoms.