constantly feeling nauseous?

Mina • taurus moon&sun - scorpio rising bby 🇹🇭

as the title says, for the past few weeks i feel constantly nauseous whenever I eat or even when i’m not eating. but thing is, i can never finish a full meal/plate.

i’m also on the implant and had unprotected sex numerous times since the start of august. my period is 35days late and i’ve taken two pregnancy tests which came out negative.

is there any reason why i’m feeling nauseous? (wanting to vomit or feeling the need to poo when i cant.)