Scared first time mom..

Sorry but I have a lot of questions and im nervous. I took a test yesterday and its positive. my appetite is gone. I ate subway, pizza yesterday, and etc but after i posted on here I learned I can't eat any of it..I paid for it when I was sleeping. All this made my stomach hurt. Before you found out you were pregnant, was your sense heightened? People perfume is so loud. I can't eat or drink anything. I'm still thirsty :(