3rd trimester nausea

I just turned 30 weeks yesterday and yesterday I started feeling kinda gross.. I thought maybe heartburn and that was the reason why I felt yucky but it ended up lasting all night and I woke up feeling nauseated again.. Not sure if I'm getting sick or its my nausea starting all over agian. Anyone else experiencing this? I really pray I start feeling better I can't do 9 more weeks of this!