The patient's clinical presentation demonstrates a classic postpartum over-correction swing into Primary Hypothyroidism. In February, her low
TSH of 0.05 indicated she was over-substituted on her pregnancy dose of 200 mcg. However, dropping her dose directly down to 150 mcg was too aggressive, causing her TSH to rebound up to 6.92. This lack of adequate
thyroid hormone has slowed down her metabolic and vascular clearance, directly causing fluid tracking into tissues (pitting edema), cellular energy depletion (fatigue), and altered neuromuscular excitability (severe leg cramps). The mild vision issues can also be tied to localized myxedematous changes or dry eyes, which are common when TSH rises