Put my mind at ease?

I am 8 weeks pregnant as of yesterday! This is my first child (obviously because I’m freaking out). For the first couple of weeks of knowing, I had some symptoms. Sore breasts, mild constipation, nausea but that was about it. I had my first ultrasound on Friday and saw the little bean! Heartbeat was 145. I found out Monday that I had a tear in my placenta and low progesterone. I’ve been on bedrest and will stay on bedrest for another week and a half and am taking progesterone pills until I am out of my first trimester. I don’t feel pregnant anymore and I need to know if this is all in my head or if I should reach out to my doctor or what. I am trying to stay calm but it seems like the odds are stacked against me.