Thanks for posting your query.
According to your description , elbow pain and swelling seems to be inflammatory in nature. Swelling over elbow might press the ulnar nerve
and causes tingling sensation
down your arm to the pinky finger.
I advice you to give you rest to your elbow, take anti-inflammatory drug like motrin
1 tablet with food as and when required (upto 4 tablets daily) to reduce pain and inflammation and consult your doctor for thorough examination of elbow and rule out any infective cause.
Wishing you good health
Dr Saurabh Gupta