Should I wait?

So I usually get cramps for literally 7 days before I start my period every month. I thought I had a stomach flu I only felt nauseous for few days and my period is supposed to start tomorrow I bought a test in case it doesn’t. Should I wait a couple days? Or test now and in a couple days? The box has two tests. Also no I’m not on bc, he pulls out, I wouldn’t mind having a little peanut.