Hello Doctor. Earlier I Had Irregular Period Problem. But After

hello doctor.
Earlier i had irregular period problem. But after an abortion (voluntire abortion due to less growth) before one year. it was becoming normal that means i get periods between 30 and 35 days. but this time i didnt get period till now (almost 44 days). I took 3 times the test using pregnancy kit after 35 days from previous period as the result come negative at each time. but I got fear that i am pregnant. I and my husband do not use condoms. instead, he takes his part out from mine before it ejaculates. I and my husband dont want child now. what can i do to get rid of that?. FYI we didnt have sex for the past 2 weeks.