Cramp tummy & morning sickness at 14weeks

Hi mommies! Im at second trimester now & my back ache are still everyday ? but my concern now is, my tummy feeling a bit cramp & sometimes i feel uneasy. I think my morning sickness just started at 2nd trimester, feeling always hungry but cannot eat in a large amount. A bit dizziness & nausea. Any tips to share mommies?