I just need to know...

Has anyone experienced nausea, overall feeling super crappy shortly after BFP (12 DPO)? Did you go on to have terrible morning sickness later? I just feel it's too early to feel so sick. It eases up in the afternoon, but mornings are terrible. Almost threw up a few times today. Appetite is gone, so I'm struggling to just nibble on bland things. I'm so afraid I'm in for hyperemesis if I am already sick bc all sites say it should'nt start until 6 or 7 weeks.