Hello Eggmelia! Welcome to PC! It is really great here and I promise there are sweet people here who will offer you advice, support and a shoulder.

Have you been diagnosed with OCD? Thats what it sounds like. I am kind of similar to you as far as not leaving the house unless my husband is with me. I have the same fear of dying also. The few times that Ive made myself venture out alone, caused such anxiety and panic, that it took days to recover. But Im still making myself do it. I started out by driving, alone, to the end of my street and back. I did that for two months, everyday. Now I can go twice that distance without panic attack. I still have yet to go into a store alone but, Im optimistic.
Hugs to you! And keep posting, it really does help!