The penis may become swollen without any pain and the symptoms can vary, for example, trauma, hypersensitivity reactions, or infections. A fracture is usually the first thought if this is accompanied by a significant accident. Regularly check out for any alterations like pain or any other changes in the normal color of the skin. However, at the moment, try the ice pack for the immediate relief of swelling, and responsible sexual activity abstinence or sex engagement should be avoided until you are aware of the situation. It is very important to take the definitive action immediately which means checking out to a urologist for a proper evaluation and a direct answer to your question.