sudden onset of pain after lifting of heavy wight suggest tear or sprain of extensor muscles of fore arm. extensor muscles take origin from lateral part of elbow. sprain at this area is called as tennis elbow. it takes time to heal. but you should not be worried at all. it is a treatable condition. avoid screwing movements ,apply tennis elbow band(commercially easily available), icing and analgesic gel massage at tendor area and mild analgesic such as ibuprofen will give relief in symptoms . Hope this helps. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.