Ladies

So ladies I need ur help opinions so I got a positive test and hcg levels said I’m pregnant did my first ultrasound showed a sac and I was almost six weeks so today woke up Bleeding no cramps just pinkish reddish called my doctor went in they only say a sac and now the sonogram says I’m 5 weeks 4 days How can that be ? I’m not bleeding anymore she saying it’s misscrage and my uterus is little open but wanted me to do more hcg level and come back next week to another sonogram what do u guys think? I’m not bleeding anymore to so I’m so confused 🤷🏼‍♀️ and a big blood clot black came down