Congrats on your positive test, mama! Ang nausea and vomiting in early pregnancy is totally normal, maraming sa amin dito sa community ang na-experience yan, especially sa first trimester, at parang lahat ng food triggers mo differently ngayon. The belly pain above your navel is something you should mention to your OB though, just to make sure everything's okay at walang ibang factors, kasi while some cramping is normal in pregnancy, it's always better to be checked especially since it's your first time. Mag-hydrate ka well and try smaller, frequent meals muna if kaya mo, at rest when you can, your body's going through a lot of changes! Hang in there, first trimester is the toughest part usually.