Hi, welcome to our site. I am Dr Saumya Mittal, MD. Read your query. That is a very significant question and i appreciate your problem. I will try my best to answer your query Yes the bruise usually resolves on its own, so there is usually no problem with that. I think the medicines you are on may have caused the blood to come out in a larger quantity from the ruptured vessels. Therefore there will be a bigger bruise and may be lumpy due to collection of the blood. Ideally, you need to dress it daily with a hygroscopic solution. And there should be an addition of an antibiotic cause the lump, medically termed as hematoma, may be a potential source of infection I hope this helps you. Inform the reports mentioned above/if any other so I can be of help further. Best of luck. I have given you the answer to the maximum considering the information provided. The results of the tests could further enhance my answer to you. Please do understand that some details could be extracted from a detailed history and examination. Please feel free to ask another query. I would be glad to help you. Looking forward to your return query with the details asked so that I can help you further. (If the answer has helped you, please indicate this)