71/2 weeks pregnant and bleeding

Maria • Mommy of two👦🏽👶🏽 expecting my third 🐣 🎀❔🎩
Ok so I'm 7 1/2 weeks pregnant and have been bleeding for about a week now. Have been to the ER twice but both time they confirmed that I was in fact bleeding but still pregnant and the baby was still their and with a heart beat and hcg levels were going up. But couldn't give me a reason for my bleeding followed up wit my OB  on Monday after some labs but before I headed out to that appointment I past a fairly large clot at that moment my heart sunk. I thought to my self did I just misscarrie... So with that in mind I went to my Dr.s app and told him he told me it was a possibility so he referred me to an image center with better machines.  They got me in within 35 mins of leaving my appointment. And assured me I was still infact pregnant and let me hear my lil ones heart beat. So I now have to wait till next week to see my OB again to hear wat he has to say about my ultrasound. And to get more blood work done.. Just really want to know ways going on here so anxiou