help ! I think I'm pregnant!!

I puked out of nowhere on Friday night, I was laying on the couch with my hubby and just got really sick then puked up all my dinner . I got a stuffy nose the next day but then felt okay . now I get weird spell like moments where I'm super dizzy and feel like puking . My pee is super blurry and I kinda am like really gasy which isn't normal. I have really frequent head aches and I have had slight cramping. I did a calculator test and it said if I was i would be 3 weeks pregnant. I started my last period September 11th . please please give me your opinions