After clomid on Cd 3/7 & pregnyl on Cd 14. Negative blood/HCG test on Cd 49. Now I'm on Cd 63, till now No period. I'm 32 days late now, Why negative result & no period? Is there is still chance to get positive pregnancy test after negative result?

Pregnancy unlikely. Home or clinic pregnancy tests are very accurate, but if done too early, a negative result may be due to testing too soon. A correctly done home urine test will give a reliable result 3 weeks after sex (when conception might have happened) or 1 week after missing a period. A woman can repeat the test if she did the first test too early, such as less than two weeks after conception.