Worried and excited

I’m 8w1d and due to having COVID I’m on quarantine until Monday. Lost about 12lbs and still sick. I can’t wait to see little bubs on US next week but I’m also worried if it’s still alive. I’ve had the occasional brown spotting when I’ve strained in the bathroom. We’ve gone through a MC and 6 chemicals. We told our family members earlier because of quarantine. Will it affect the pregnancy if I’ve lost so much weight? If it stopped growing, wouldn’t I be bleeding and cramping?