I think with missed period and lactating, after a pregnancy
is excluded, you need to do two more important blood tests i.e- serum prolactin
profile.Well if any or both of these are abnormal, you need to be treated accordingly. I cant exactly correlate the the abnormal smell sense with your problems.However if you are having a problem with vision with high prolactin reports , it need immediate attention and further testing. So good luck and proceed.