Random swelling of my finger

about 3 days ago i noticed a slight tingle and redness in my right middle finger, and since then its got worse. the part around my nail has completely swollen and is really red. its sore to touch i can't put pressure on that part of my finger, i have also noticed little red dots around my hand and up that middle finger. it almost looks like a blister, the skin is stretched and shinny, but i literally have no idea what it could be. the whole tip of my finger is very stiff and hurts to bend, but this has all come on very randomly, any advise would help!
thanks

[Londres70]

Sounds like the finger could have gotten infected.  Do you recall scratching or injuring the finger or getting bit by an insect/spider?

You really need to seek medical attention for this.  Difficult to say what this is exactly.  

[Paderla Anitha, DNB]

Hello and hope you are doing well.

It could be a nail bed infection, also known as paronychia. If left untreated it can progress to a more severe infection of the entire finger. If an abscess has formed it needs to be drained and you will be given antibiotics for the infection. You may need to consult your primary care physician who will examine you and initiate appropriate therapy.

Hope this helped and do keep us posted.