You've had low iron for the better part of a year now. Labs from last fall showed ferritin at a 4. Three infusions brought it up, energy came back, hair stopped shedding. Then a few months later it slid again, and the new labs put it at a 6.
That pattern is familiar to a lot of the Jacksonville women we see, especially anyone commuting between San Marco and downtown, or managing a household out toward Mandarin. Ferritin recovers after a round of treatment, then drifts back down once nothing is replacing it.
Concentration issues often get worse in the week before a period, which gets waved off as stress or a bad week at work. A standard CBC can look normal through most of this, so the exhaustion gets chalked up to a busy schedule or a long day out in the St. Johns Town Center.
A follow-up infusion at a Baptist Medical Center or Ascension St. Vincent's Riverside outpatient suite means booking weeks out, then losing a morning to I-95 or I-10 traffic, parking, and a waiting room that wasn't built around anyone's work calendar. Not something worth repeating every few months for anyone juggling Duval County Public Schools pickup or a job near Riverside Arts Market.