Cardiology appointment today

Today is my cardiology consultation. I'm so scared, anxious, nervous, and sick. I have the migraine from hell and I couldn't sleep last night. I woke up and layed there thinking about a lot of things and ended up having a panic attack. I'm so tempted to just not go as I really don't want to know what's going on. I know it could be nothing, but with my family history, it is very likely it is something and I don't want to face that. My husband has to work since he started a new job, it wouldn't be good to take time off already. My grandmother offered to come down from Orlando and go with me, but she would do more harm than good really.