Every iron marker has dropped but ferritin is still 160 after being 200s all summer. felt great then, now i can barely run since i cant breathe well. no covid, heart issues. took break and still feel horrible. is drop in hemoglobin 14.8 to 13.4 big?

It’s not a huge drop in a menstruating female, but you can and some iron to try and help. Also check urine and stool for other possible sources of bleeding. Sometimes we do get viruses that don’t have a lot of symptoms but leave us feeling exhausted. Sometimes for months. Classically I would see this in mono or EBV but covid can do it as well. Eat well, get good sleep and follow up with doc

Exercise limitation has many possible causes, and a pulmonary evaluation is indicated. A chest image, oximetry and Pulmonary function testing may be ordered as indicated. A virtual consultation with Healthtap is available. Cardiac conditions are less likely given your age and that you did have COVID 19 infection. Maintain a healthy weight and eat a healthy diet including eggs and lean protein.