Do a pregnancy test first. You can do a pregnancy test from the first day you missed your expected period and onwards. Before this time, the level of hormones produced by the pregnancy is too low to show up on the test and you may get a 'false negative' result. A pregnancy test can be bought at a pharmacy or drugstore. You only need to put a bit of urine on the tester and after a few minutes you will see if you are pregnant or not. You can also go to your general practitioner or family doctor for a pregnancy test.