Eating (heartburn & nausea)

I usually am good with eating but within the last week no matter how light or heavy I eat I end up with nausea and then a couple hours later heartburn. I can't eat the preggie pops but really need advice on something to control it so I can eat one meal with no side effects lol. S/N: Did y'all still carry an older child around while pregnant? My son is almost 2 years old and 32 pounds. I was wondering if anyone had problems. My OB said I shouldn't pick him up but it's pretty hard not to.