If you had a chest x ray, everything seemed fine, mild edema noted? is the mild edema normal?

Mild edema xray ches: No mild edema is not normal, normal chest xray has clear lungs.

Can be artifactual: Mild edema if a real finding is usually related to congestive heart failure or too much fluid overload. Sometimes lack of decent inspiration on chest xray can mimic edema. Your physician should correlate findings on xray with clinical findings and make decision whether finding is any import. A lot of chest xray interpretation is gray and not black and white.