Hii i am 27 yrs old, we r trying to conciving frm last 2yrs.. i have pcod..my laproscopy done in last year.. tb dignosed.. after compliting six months TB treatment we r now again trying...in last month i ovaluate in proper time that is at 16th day.. iui done but still no pregnancy...period come at 30th day.. my thyroid and prolacting is normal.. simen also with good quality.. then what is the problem..? Why i am not conciveing?