thank you for your query.
Your condition is that of olecranon bursitis
or popeye's elbow.the medication given by your doctor was to decrease the infection in the bursitis.but it seemslike the infection hasn't gone down completly.
The NHS (National Health Service, UK) recommends PRICEM - a self-care management approach. PRICEM stands for:
Medication like pain killers
If swelling and pain do not respond to these measures after 3 to 4 weeks, your doctor may recommend removing fluid from the bursa and injecting a corticosteroid medication into the bursa. Corticosteroid injections usually work well to relieve pain and swelling.The bursa usually grows back as a non-inflamed, normally functioning bursa over a period of several months.
wishing you good health