maybe i’m pregnant ?

me and my boyfriend started having unprotected sex about a month ago in attempts to start trying to get pregnant. we have sex often. i’ve been nauseous everytime i eat for about a week or two. last month my period was almost a week late and in 3 days it’ll be a month since my last period started. i’m not sure if i should test yet or keep waiting. my mom thinks i’m sick from stress but i’ve never been sick from stress like this before ever.