I had flu like symptoms for a day that included severe chills/shaking and all over body pain with slight nausea and headache . Over the next two days it has become significatly less severe only presenting head pain and fatigue but I have now developed two red painful lumps at the bottom of my armpit as well as one on the inside of my gums that were not present the days before, should I consider getting an appointment and what could be the cause?