Why did I get this? And how? I wonder everyday. Nobody I know has it or has ever heard of it.

Sorry I'm up late and having a panic attack so I just want to jabber.
Anyway it started for me when I was around 8 or so. I went to bed and woke up in the morning with a bad sv. I can't remember ever being sick again for years. I never even got car sick. When I turned 14 I went to a counseling center because my mom thought I needed help. I got put on all kinds of crazy psyche drugs. She finally took me to a regular doctor and they ran some tests and said I had a lithium imbalance. So I was on 900mg a day of that. When I turned 16 I started having real bad heartburn that was making me N. So I got put on heartburn meds. When I was 17 I became pregnant and I couldn't take anything. After I had him my symptoms were way worse, and they told me my meds were making my stomach inflammed. So I was on colonopin for anxiety, phenergan for nausea, belladonna for cramps and heartburn pills. But as the years passed my symptoms got worse and then came my fears twofold. Here it is almost 10 years later and I hardly want to leave my house. I'm constantly n, and I feel like I drank a gallon of lemon juice all the time. I would go days without eating because I hated how food made me feel. I wouldn't eat for so long I never got hungry. I began to think that it was normal to always be n... Until one day I started asking people but I was the only one. Then I got pregnant again and it was worse than my first I had ms most of the pregnancy. After him my phobia got even worse. Now I worry about going across town. What if I start to feel sick in the car? What if I feel sick when I get there? I try to figure out how long I'll be away from home and how far. I hate going to stores because if the same thing or maybe there will be a bad smell or something that looks repulsive. I really hate going out of town because of how long I have to sit in the car. What if I start to feel bad? How many stops are inbetween? What are the road conditions? Is it a bumpy road?is it a curvy road? I take loads of stuff with me to keep me occupied. And everywhere I go I take tons of meds with me. I get real scared at night because I'm afraid I'll v in my sleep. I make sure I have enough light on so I can see the way. I make sure there is a clear path to the bathroom just in case. And I cannot go to sleep before midnight because I feel I might be safe anytime after that. I hate this!
Thank you if you read this.