I've been having a hard time breathing and...?

Well yesterday I was out having fun with the boyfriend and then I just couldn't breath. Well I could but I wasn't getting much oxygen that's forsure. And he just told me to take deep breathes but that wasn't really helping either. Well when we went home and i got out of the car I got really dizzy for like all of 10 seconds. But when he brought me to my house I got really dizzy and I felt like my body wasn't there and it took me awhile to process what he was saying to me. Well when I woke up this morning I was kind of dizzy and I'm still having problem getting oxygen. Do you know what this could be? I said I probably have emphysema because I used to smoke but he said I didn't because I would be having to go to the ER. But what else could it be? It's really worrying me and him. Thanks!