Chances are it's too late for an accurate swab. The swab test needs to be done typically within 24-48 hours of a lesion forming. Any later and it could result in a false negative due to not enough virus being present at the time of collection.
Thanks for comments. Have booked in to check with doc. Will update with what I find out.
Go to the doctor and get it swabbed. Best thing you can do right now
That definitely looks like it. Sorry.
It's like a tight bunch of tiny white circles, it looks like I could pick the head off them of course I wouldn't though, hurts to touch it as well.
We really don't look at pictures. Describe it and location.