<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, may I answer your health queries? Please type your query here...sir we are trying to conceive from 2 years and now my wife has missed period abt 8 daysher period is regular normally,she feel back pain,a white milkywithout smell liquid small quantity from her vagina,change colour of her nipple but when we take pregnancy test in lab it is negative.kindly advice us we are in heavy amount of tention  <response>: Hi, If pregnancy test is negative, but periods are not coming, you can wait for one more week and repeat the test in case periods dont come. If you are trying for 2 years, now you should get yourself evaluated. Do some basic tests like semen analysis for yourself and thyroid profile and ultrasound for your wife. Maybe you will need some medicines to conceive. Hope I have answered your query. Let me know if I can assist you further. 