Miseryyyy & gas

Ugh this pregnancy is completely different from my first. Don't want to be miserable but I'm so uncomfortable.. I have heartburn, bad gas, indigestion, one day diarrhea then the next im stopped up 😒 I feel that I can also throw up on the drop of a dime so I have to eat extra slow without thinking of what I'm eating..I don't know what to take or where to start but I feel like a beached whale and I'm only 14 & 5 .. Please someone share my struggle?! 😰