Based on the information, their are negligible chances for pregnancy
. Just calm down and try to relax.
Menses can be delayed due to various causes like
1) Mental Stress
2) Ilness like "flu".
3) Heavy exercises.
4) Imbalanced diet.
So please calm down and wait for another week and then take the urine test again to rule out any possibility of getting pregnant.
do not include the sperm its simply lubricant secreted for friction free insertion.
Hope it will give some relief,
Dr. JAY PATEL