It’s normal for pregnancy tests to show positive results for up to a month after the abortion process. One way of finding out is to purchase two home pregnancy tests. Take the first test one week after the day you believe you conceived, and the second test a week later. If the results of the second test show up darker than the first one, you could be pregnant. If the second one is lighter, then it’s likely the test is being influenced by the hormones your body has been producing since the initial pregnancy.