Hiya, I know the feeling all too well... I have suffered through three mc. I am now expecting again and man the first weeks to the end of my 8th week were stressful. Everyone keeps telling you not to worry ect, but you know what, it's ok to worry and be scared. What I did was just breathe through the panic, talk to myself in the mirror, saying things like "this one's gonna stick" and I prayed... I am now almost 10 weeks.
I cant promise everything will be fine, but I can say, that everything happens for a reason.
xx stay in touch and if you need to talk, msg me directly through here xx