Help..

I’m about to be 18 and me and my boyfriend have been living together for awhile back in october i got pregnant and proceeded to have an abortion right now my period is almost a week late and i’m absolutely terrified i’ve taken two test and they came back negative but i still have a relatively bad feeling about this what should i do i don’t have the money to get an abortion again and i cannot have a baby at this point in my life or in my relationship