I went to see my doctor a week ago, about no period in a month i took a urine test neg.. now a week later im having a pink discharge+ cramps no pd yet ?

Blood test: Urine pregnancy tests while quite accurate depend on the particular hormone being in the urine. This in turns depends on the level of hormone in the blood [varies person-person and length of gestation] and how the kidneys are functioning. Many pregnant women have neg urine for as long as two months. A blood pregnancy test is completely reliable. Perhaps pregnancy needs ruled out.