You need to consult a ENT specialist
Since You may have tympanic membrane (ear drum ) injury
which may have perforated due to sudden change in pressure when you have jumped from some altitiude.
This may cause Otitis externa
which causes the above symptoms.
You need to avoid swimming, head bath until it heals
Your ENT specialist may give antibiotics for bacterial infection if present.also he will treat inflammation in Tympanic membrane.