Greetings
From the question, I can see that you are worried about when to perform urine
pregnancy test.
Urine pregnancy test is a very sensitive test that sects even very low levels of a biochemical marker for pregnancy.
You can perform it in the first day of your missed periods too.
However, if you feel that you have the chances of pregnancy, you may get an earlier diagnosis with certain blood tests.
Next Steps
Please consult your gynaecologist for further advice regarding other ways of confirming your pregnancy.