Does anyone feel like they aren't connecting?

Don't get me wrong I 100% want my baby. I have had 2 miscarriages in the past, then over a year of trying. We ended up doing <a href="https://glowing.com/glow-fertility-program">IVF</a> and we were successful on our second attempt. 
I thought I would be exploding with excitement. Instead I feel like I'm just waiting for something bad to happen. Because of that I don't think I'm letting myself get excited. I know I'd be devastated if something were to happen. So why can't I just be excited now? Does anyone else feel this way?