Sorry to be a pain and ask this but does it sound like I am pregnant?

sometimes when ur stressed out, ur period can come late. Also, throwing up before getting ur period is common...I throw up before I get my period sometimes, usually because of the hormones and soemtimes it's the kind of food you eat that will make you react that way (I tend to eat a lot of chocolate before my period, but if I eat a lot I throw up). That being said though, did you have unprotected ? I would wait maybe a week, if u dont have ur period then, then yeh get tested....but really be careful next time..