I think i've been exposed to covid and i'm experiencing low grade flu symptoms and mental fog should i get a test ?

Yes: Get tested so you can protect yourself and others if you are positive. Most importantly boost your immunity by getting plenty of rest and taking supplements like zinc, Vitamin D, and others that can help you even if it is not Covid. Drink plenty of liquids and social distance if you have to go out. Contact your doctor if you develop fever or cough, also take an aspirin daily if not allergic.

Yes: You may just have flu. But with your history of exposure to Covid-infected persons, your symptoms, especially if they include sore throat, cough, fatigue, are suggestive of Covid infection. Consult your physician. Self-isolate meanwhile, and treat by increasing fluids, acetaminophen, rest. Hope you get well soon!