I'm 31y/o female,no accident, injury. my entire body aches non stop, especially when it's cold or bad weather.no visible swelling,slows me down a lot.

Many possibilities : There are many possible causes such as autoimmune conditions like Lupus,but it's more likely you might be diagnosed with fibromyalgia. However the underlying cause might be chronic infections like Lyme-Related Complex. Food sensitivities such as gluten intolerance and environmental toxins like heavy metals might also be a factor. I advise seeing an integrative Dr. See https://tinyurl.com/y8opon3c