What is wrong with me?

I'm really shy, and the shyness is genetic. I get afraid to leave the house, and scared even to go to church because I won't have anyone to talk to. And I'll avoid going anywhere because I fear of being alone, and if I'm forced to I'll have a mive panic attack and demand to stay home; if it's not a familiar place. And during the hurricane when the power was out, my family put the generator on the porch and I was so scared that I would die of carbon monoxide poisoning that I went to the opposite end of the house (where it was dark, and hot) sat in a corner and cried/panicked. The same thing happened when I went to a friends' house. The generator was by the door so I didn't even enter the house; I just stayed in the driveway outside until it was time to leave. Even at the grocery store, I don't like walking around alone if it's crowded, or out in the open. I always get so scared so easily; and I feel so alone in the world. Nobody understands. I dunno, do I have agoraphobia? Or just really, really bad panic attacks?