Pregnant and lonely..

I’m 9 weeks pregnant, I told my partner at 6 weeks and I’ve had it tough so far, I’ve been extremely poorly with it so far. I’ve had a miscarriage previously so I’m worried about progress and waiting anxiously to get an appointment for my first scan. Because of the miscarriage I haven’t told anyone about this pregnancy in case something goes wrong. I’m really happy about the pregnancy but I just feel so alone, I want to tell my sister about it to get some support but I really want to wait till after my first scan. I just feel really emotional and find myself crying all the time. I’ve tried to hide this as much as possible from my partner but just feel very lonely.