Pregnant???

Just went to an urgent care (Virtua to be exact) for chronic nausea and really bad fatigue. The preg test came back negative but with a missed pill (beginning of last month) a period that was 1 and a half days of like 3 spots and my symptoms she seems to think I'm early in pregnancy. She told me to stop taking my BC pills, start taking prenatals, follow up with a real OB (I was using Planned Parenthood), and take an at home test in about a week. I'm freaking out (on the inside) and want to know if anyone else has had a similar situation and what happened?