I am currently having a very strange fever where my bladder and intestines feels really full, my stomach feels like I ate too much, my lungs feel like I ran a marathon and pushed it too hard and my heart has an very light stinging pain with every pulse. I've taken aspirin for the headache and drink a lot of liquids. I also have barely eaten anything, maybe a quarter or less of my average food consumption. I use the bathroom to empty my bladder but it seems I have low pressure when urinating. The abdomen pains started about a day later my fever started. My usual fevers just have runny nose, light headedness, and sensitivity to light, but this time I have none of those symptoms, just the headache. Should I be worried or is this just another type of fever I'm experiencing for the first time?