Help 5 weeks pregnant

Hello everyone, I went for an ultrasound since I hadn't had a period since November. On 2/28 I had a bfn test and today I went for an ultrasound to find out suprise I'm pregnant. They said I'm about 5 weeks or so. There is no fetal pole yet and I'm just worried now since I previously had a mmc in November and a chemical in January. With my last blood draw being negative on 2/6. I'm super worried this is gonna be another let down.