Hi, You can do three following methods to confirm your pregnancy:-
1 Urine pregnancy test As you have done it already
This test is advisable after 1 week of missing period.
Ideally this test is done from first morning urine sample
2 Blood test
This is most confirmatory test, but it takes time to get results And it come positive after 6-7 days of your ovulation
The name of tests are
1 Qualitative hCG
2 Quantitative hCG test
3 detection of EPF factor
3 Last is ultrasound
which you can done after 4 and half weeks of your last month period.