Pregnant with stomach aches

Lexi

I am currently 21 weeks 5 days pregnant. Since i was about 6 weeks i suffered from really bad morning sickness that lasted all day and night (so bad i had to quit my job) around 15 weeks it went from throwing up all day to maybe 2 times a day a couple of hours after i eat or drink a lot. Is this normal for every time that i eat for my stomach to hurt and throw up? it can be anything from crackers, a cold sandwich...literally anything. HELP PLEASE!! i am so tired of something always being wrong and my doctor just tells me to keep taking my zofran but it clearly does not work