Wow just wow

So I was with my boyfriend for about five months and he started getting jealous so we decided to split, well I decided, and I just took a test and I’m pregnant! I just took the test yesterday and I’m wondering what people have to say about dark lines with tests from dollar tree. I’m about a week late on my period. The ending of my last period was 8th of March. Does anybody have an idea of when or how long I’ve been pregnant and what the dark lines mean.