How to relieve morning sickness and other symptoms

I am over 7 weeks pregnant and I feel so terrible some times . I want to vomit all the time or I do vomit. It’s making me develop a habit of not eating or only eating once a day and bingeing . I’m afraid my baby won’t get food nutrients later in the pregnancy . I’m also feeling like the headaches and dizziness are making me cranky all the time and I don’t want to be a cranky future mommy :(