Hi Debbie,
Welcome! It's good you found this site at the beginning of Jim's treatment. Come here often, no one knows better than the people on this site what you are going through. My husband just had radiation, but that in itself was terrifying. I can remember having a knot in my stomach practically the whole time during his treatments.
You're not a basket case, it's normal to feel what you're feeling right now. You love your husband and want him to be OK. Just take it one day at a time. Read as much as you can here, it will help you I promise. And vent as much as you want, we're all here to help and support you. Just remember, you and Jim will get through this.
Hugs,
Shelley