I Been Admitted 2 To Hospital Within 5 Days With

I been admitted 2 to hospital within 5 days with dehydration and nausea I've lost a stone in 2 weeks I'm very very tired all the time I have b12 injections 3 monthly I am having stomach pain been sick all day everyday like about 50 times hence dehydration I'm also 7 weeks pregnant but I don't think the pain and sickness is pregnancy related I wake up with stomach pain in the night even I'm getting so depressed with feeling like this no one seems to listen and just say it's morning sickness my brother and dad have colitis and chrones also my belly burns if I eat I not sure if that's because been sick so much there is some foods make my heart race soon as I drink it like pop and alcohol