Could using cocaine a few days ago be the cause of my sore throat? possibly due to nasal drip maybe?

Even casual use of: cocaine can cause more harmful health issues than a sore throat or post nasal drip. Research has shown that casual users (once a month) who have discontinued use of cocaine, show signs of changes in their brain scans. Unlike alcohol, addiction 2 cocaine and serious life and medical complications can happen very quickly. Don't play with fire, avoid the drug or get professional help if U can't stop