Confused af!

Ji

Ok so I missed my period for 7 days and very nauseous craving weird things and vomiting the night of day 7 I started bleeding very lightly, Ive bleed lightly for 4 days then spotted for 1 or 2 days then it stopped bleeding all day last night took a test it was negative 😭😭😭 then a few hours later I was bleeding semi hard, today it’s like medium. I’m still nauseous and vomiting once in a while. Has this ever happened to anyone before? Is this normal? I’m so confused!