What do you call it?

I’m 23 and I’m only 30 weeks pregnant. I looked it up and all I got was heart palpitations. Or another thing could be caused by stress or high cholesterol. It’s not bothersome or anything but it would skip a beat sometimes in my chest for like a second and it goes away? It don’t hurt just feels weird. I’m healthy so I know I don’t have a heart disease or anything. But This has never happened before so I’m wondering if that’s normal during pregnancy or what? Or any of you could understand what I’m trying to say to see if you can relate?