I have a headache that started last night after I had dinner - I had fish which was in fridge still in package, however it was thawed out from frozen over a week. Today I have a fever, which is better with cold showers and advil. I woke this morning and had normal breakfast, and was able to go to church and grocery shopping, but feel horrible again now, have been also going to the bathroom, trying to drink lots of water. no vomiting, but feel tired and no energy.