See a Dr, we don't look at pictures and STD's don't show that soon.
Its looked the exact same pretty much the entire week or so I've had it, hoping it just goes away soon.
I'm pretty sure its not herpes, showed up too soon and doesn't appear to be a blister that pops and scabs over. Also I have some herpes medication/cream that I have been taking just incase (acyclovir). And thats pretty much the go to treatment for herpes.
There is a possibility that it's herpes. It can be hard to tell from the picture alone, but I would urge you to see a doctor before it scabs over. They may be able to do a culture test while there's still some fluid there, otherwise you would have to wait at least three weeks before a blood test will be accurate.
http://postimg.org/gallery/11gfv1aos/9fb9c802/
image link got messed up