Since you are sure you ovulated, you should repeat the pregnancy
test or better still, get a blood test
followed by a pelvic/trans-vaginal sonogram and see your consultant with the reports. The white discharge you have described may be due to progesterone
and is seen in the secretory phase of the menstrual cycle or in pregnancy. The HPT is best done 3 weeks after ovulation with a fresh sample of early morning urine. Please get further advice from your doctor. Good luck.