I’m 39 days late on my period I’ve taken pregnancy test and some come up positive, some have come up negative, blood test say my levels are elevated but it’s still negative.

I’ve been getting sick during the day, I’m super sensitive to smells now, I get motion sickness when I drive too much or if I’m in the car too much and that’s very uncommon for me. When I was getting sick I lost some weight and now ive noticed some weight gain. I’ve ruled out a lot of things it could be. But I need more help figuring it out. I’m really stumped.