i have undergone IUI on 12/12/07 and the doctors has conducted urine pregnancy test at 9 pm on 1/1/08 and confirmed negative. she conducted TSH test and found it as 26 instead of a maximum of 5. then from 4/1/08 there is little flow which is very thick. i would like to know whether i am really not pregnant, if so why the period got delayed so much. please answer.