Emotions...

Is anyone on here maybe dealing with something serious in their relationship... A month before I found out I was pregnant, I found out my other half cheated on me a few months prior. Now with a baby on the way, I'm terrified... He wants us to be a family, but I'm just so afraid. I initially wanted to make it work, but now 3 months later it doesn't feel much better and the pregnancy hormones don't help. I just really need some advice in how to view this as a new chapter instead of being terrified it could happen again and leave me alone with a baby in the future....