Covid for the first time. 40f,no underlying conditions, vaxd, mono boosted. on day 7 and still feel like i have the worst flu ever. cough, diarrhea, nausea, dizzy, exhausted, chills, sweats, no smell/taste, xtreme thirst.normal or should be seen?

Those symptoms are not unusual. If you don't have high fever (more than 102) and/or no shortness of breath, you can continue with symptomatic treatment for cough, diarrhea, etc. You should increase fluid intake, preferably with sport drinks for calories and electrolytes. See doctor for high fever, chest pain & shortness of breath or productive cough with greenish phlegm. Expect improvement soon.