Missed period

Veronica

Hey ladies, I have a quick question so today will be a month a full month with out my period for some reason my period didn’t come in July I’m not sure what’s going on I toke 2 pregnancy test and they both came out negative, I’ve been having really bad heartburns and feeling nauseous though out the day also my nipples hurt really bad I also been feeling constipated in a weird way is that normal?