HELP WANTED !!

I'm 12 days late , AF was suppose to be January 18th . I took 4 pregnancy test a week before my period they came back negative. I've had pink spotting for 2 days a week before my period. According to Glow I'll be 6 weeks on Tuesday . I took a pregnancy a couple of days ago and it had one line I'm not really good with looking for the lines or anything like that .I've been feeling nauseous a lot with a serious head ache and this morning I threw up my breakfast ( which I'm pretty pissed about I worked hard on my Mickey Mouse pancakes 😂😔 ) . What should I do ? I feel no cramps or PMS symptoms that I usually would and im bloating something awful .