Really scared

So I'm 18 & I just lost my virginity back in June .. I was really scared & nervous 😶 After I lost my virginity I have been sexually active . I had sex with & with out condoms . Every time me & my partner have sex he pulls out ‼️He haven't cummed in me . Well he says he haven't . But my period it suppose to start on sept 18 .. I usually have pms ! but I feel nothing 🤦🏽‍♀️🤷🏽‍♀️I took 2 pregnancy test both negative 👎... I'm worried or maybe I'm just over thinking 💭💔. But yu guys are so helpful so I thought I should share ...