Too early for digital ????????

karen
So I have unprotected sex with my boyfriend here and there he doesn't always finish inside of me. Thursday I went to the bathroom & I see a little bit of blood on the paper when I cleaned myself but it was like stretchy blood and 2 very small dots but I didn't think much of it. So on Saturday We went out to eat & then we went to the mall before eating I felt kinda nauseous but I thought it was just because I didn't eat anything that day except for water and watermelon after eating I felt okay I didn't feel nauseous at all & before going In we smoked a little bit (weed) I'm not a huge smoker I just do it here and there. When we went in I felt high , but as we were in the VS line I started to feel like I could barely stand up and I needed to sit down so we left the store and I fainted. He held me until I felt better I was being stubborn and I told him I didn't want to ruin his day that I wanted to go back in the store and we did & as we were in like I feel dizzy AGAIN! but this time I threw up ... 😭 gross huh ? So i went in the bathroom I washed up & I felt better. 
I was scared so I took a pregnancy test but it was a digital test... It said Not pregnant. But I was thinking what if it was too early for digital ? I haven't felt nauseous or sore breats or dizzy at all since then so I'm thinking the test was right ?