HI, thanks for using healthcare magic
Based on the history provided, you had an 
abscess which is a localized collection of pus.
This is usually associated with a painful lump that discharges pus and blood.
Most of the pus should have left the collection area but in some cases, small pockets remain that result in recollection.
If possible, it would be best to be seen by your doctor so that the area can be explored gently in the office to make sure no more pus is present.
Antibiotics are also suggested.
If exploration is not an option at this time, you can consider cleaning the area with an antiseptic and applying a bandage with a 
topical antibiotic along with 
magnesium sulphate paste.
Magnesium sulphate paste encourages foreign material to discharge.
Cleaning and application should be done twice daily.
I hope this helps