Your haemoglobin of 8.9 and
ferritin of 12.1 point to iron deficiency anaemia. This is common in the second trimester, when your iron needs rise sharply for the baby's growth. It's very treatable, and catching it now is exactly the right time to correct it. Your anomaly scan being normal is a good sign for the pregnancy overall.
Next Steps
Your obstetrician will most likely start you on iron tablets, and may check your
B12 and folate too. Eating iron-rich foods like spinach, dates, jaggery, and meat if you eat it, along with vitamin C from citrus fruit or amla, helps your body absorb iron better.
Health Tips
Watch for breathlessness, unusual tiredness, or a racing heart, and mention it at your next visit. Please see your obstetrician to confirm your iron plan and repeat blood counts.