I want to be excited ....but....

So I miscarried in Feb and now I am 8 weeks pregnant with our Rainbow. I really want to be excited but I can’t bring myself to it. I haven’t even been to the doctor yet, because I am so nervous about not seeing a heartbeat. I’m not having any bleeding or cramping, and I’m having all of the pregnancy symptoms minus the vomiting. Typically 10 weeks is when they want to see you so I have a couple of weeks to get my nerves together...any advice?