I've been swimming 5 days a week for two months. My right elbow aches for a short period about once a day. Is this carpel tunnel? What can I do?

EPICONDYLITIS LIKELY. This is not a symptom of carpal tunnel. Your lateral elbow tendon attachments for the forearm muscles may be inflammed. A simple check up by your doctor can determine the cause.
Not CTS BUT SOMETHIN. This is not capital tunnel syndrome but it is something else. The very first actions to rest the area for about 19 days and try a slow return to activities. If this persists, i would seek medical or orthopedic evaluation.