My t4 levels were 4.4. Thyroid is swollen and I feel like utter crap, spend most days crying. I'm 26 and feel like my body is falling apart. The weight gain is disheartening especially when I hardly eat and spend time in the gym. Has anybody had it postpartum and eventually everything has returned to normal again? Nobody in my family has a history of thyroid problems. Also I keep thinking that when I have the ultrasound on my neck they might find cancer. I can't cope with how I'm feeling at the moment. I've started if on 50mg on the levothyroxine. When will this start to kick in?