I was sick with flu A, fever of 102.3, stuffy nose chills headache fatigue runny nose throat problems vomiting, now body temp 95.4 severe stomach?

All can be seen. With a bad case of influenza. It really comes down to are you able to keep up with oral intake, try to focus on low sugar electrolyte replete solutions like pedialyte or low calorie gatorade, but also how severe you pain is. If you are unable to keep hydrated and/or the pain is severe, go to the ER. You many need IV fluids and to be monitored for a very short period of time and/or pain meds.
ER/UC. You must be examined and treated. Please go to your local ER or urgent care clinic for exam and testing.