Loosing all hope

I swore I was 8 weeks 3 days but I was measuring only 6 weeks as of today I am 6 weeks 5 days. My baby had a heartbeat of 61bmp which is extremely low. Now my Dr said that said that it could be normal due to it just starting to beat. I asked not to sugar coat Anything. I he said i give u 50/50 chance. I started spotting only when I wipe and went to er I am RH- so I have to get a shot immediately upon bleeding of Any sort bc my body will attack the baby. They wouldnt give me a US bc the Er dr felt it could do more harm then good. They did take my levels and he said i am spot on for being 6 weeks 4 days. The spotting is almost non existent now . I am trying so hard to have hope but i am losing the battle with myself and I can't get on bored with my family saying it's not over yet blah blah. I had multiple apps on pregnancy and deleted them all bc I don't know how to do this I am so angry and upset. I just lost my last baby last cycle and I am struggling rn to think 2 miscarriage to back to back is devastating