My son is 5 weeks old but was due today. we spent 17 days in hospital with jaundice, low weight gain and low temperature issues. At 10 days he was diagnosed with congenital hypothyroidism. Although he's doing better, he's only 3.5oz heavier than at birth. My outreach worker said he would have been a seven pounder if I'd gone to term. I know it's stupid, but I keep having waves of sadness about everything that has happened and I worry that he'll always be tiny.