Last trimester sickness...

Hey all quick question. I'm bordering into my 28th week of pregnancy. The last few days I've been getting heart burn so bad that it crawls into my throat and I feel like I'm going to get sick.. Today I thought I finally found some relief but I've been having the nasty (bad egg tasting/ smelling) burps.. And watery stools? 
Is this normal flu like symptoms? Or later pregnancy ailments?