In sep 2016 i had a medical abortion,so in feb 2017 took a pregnancy test and it came out positive. is this test accurate or false positive?

Tests are accurate: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex, so the question is could there be a new pregnancy since September. If a repeat test a few days later is still positive, then a pregnancy is the likely cause.