Seriously, am I pregnant?

So I took a pregnancy test yesterday, midday because I have been feeling nauseous, having sore breasts, excessive fatigue and GI issues for over a week. The first test came back positive and then this morning the digital cams back negative🤷🏼‍♀️ super confused! My period is supposed to start today, but so far nothing! I’m not sure which one is more accurate? Help please!☺️