hello
Hello and welcomed not worry you will be fine. These bumps are produced as a result an immune mechanism to the injury by a process called Inflammation it is characterized by redness, pain,swelling, hotness. Alarming symptoms in head injury are severe headache, vomiting, vision changes and disorientation. And you do not have these symptoms.You'd done food to apply the ice packs. For pain, you can use ibuprofen 400 mg three times a day. You will be ok in a week. Hope you understand. ThanksBye