Too anxious to be excited

I had a miscarriage in April the day before our first sonogram. We got our positive test on Tuesday, and I've had waves of nausea on and off. Had very little of that last time. Every time I realize I'm not feeling sick, I start to get scared I'm losing it again. Last time I knew it was a miscarriage for sure when I realized my breasts weren't tender for the first time in weeks. (That and the bleeding, of course.) Is there ever a point again where you're just happy, not terrified?