Welcome dear! Thanks for consulting me at virtual clinic. I have carefully worked through your case, and I can realize your health worries. Being your physician, I assure you not to worry as I will take care all of your medical concerns. Its bruise and usually it happens in some activities and remain unnoticed. Its not significant clinically as it has no harm to your health. But if a patient comes to my clinic, I always prefer to rule out any bleeding diathesis or any other blood clotting disorder. If it doesn t go away at its own in few days of heat massage, please consult your physician for blood work up. If you need further, detailed and quick assistance related to any health issues, feel free to ask me a question directly from my profile. You can also attach Lab reports and pictures with direct question. May you get very well soon and have a wonderful time ahead. Please don t forget to give your valuable feedback and five star rating, to help me assist you in a better way. Click at I Find This Answer Helpful. Please, write a review about your experience with me.   Regards! DR. HANIF PHILADELPHIA, USA