My daughter is 15 weeks pregnant. Her thyroid test at 8 weeks pregnant was was aslightly under but the Dr didnt change her medication. A test was done last week at the hospital and the midwife has rang and said that it is dangerously underactive. Has anyone had this before and has it had any effect on the baby...ive read on the net that it can cause developmental problems...we are worried that the baby has been harmed.