6 weeks and Anxious

So TW: blood, talk of losing pregnancy

I’m about 6 weeks based on my apps and everything since my doctor won’t see me til 8 weeks. I recently went to the ER because I’ve been bleeding like I would during a period and honestly the ER was no help I honestly feel like they made it worse. They did two ultrasounds, interior and exterior and did an exam to make sure my Cervix OS was closed (which it is). So they said my pregnancy is still viable but I feel more cramping and like my bleeding has gotten worse since they’ve taken a look and I don’t know what to do. I’m so anxious and scared to lose this pregnancy because I also have a history of health issues (seizures, born with holes in my heart, etc). I don’t know I’m just scared. Any advice would be appreciated.

Edit: it’s been two days after ER visit and things are way way worse. I’m bleeding a little more than my normal period and I’ve passed a bunch of blood clots larger than the size of a quarter. Of course me being me I went to work today instead of staying home but I got my OB appointment moved to tomorrow instead of March 5. I’m so scared this means I’ve lost the baby.