If you are having similar other lesions (pimples) over face, then it could have been acne
But if it was the only one lesion, then the chances are of pyoderma
(bacterial skin infection
) - may be furuncle
The clear fluid coming out must be serum.
Now do not manipulate it any more. After washing it with drinking water, apply plain antibiotic cream. You can take oral analgesics to reduce the pain and inflammation.
Consult a doctor so that suitable oral antibiotic can be started.
Dr. Ajit Singh Kulhari
MD - Skin & VD