While I’m in the grocery store and stop in a isle I start feeling a sudden nauseousness and my vision was getting blurred out and my hearing was going away. I was also getting really hot. Idk what to do. I don’t think it’s because of hydration because I drink a lot of water everyday. This has happened to me at least 3 times today

I’m 32 weeks pregnant any ideas on what it might be or what I should do?