Help! Am I pregnant ?

About a week ago me and my boyfriend were fooling around and getting really sexual. He didn't fuck me for long and if anything he was teasing me with his dick and went inside me for like a few seconds or so and then pulled out. After that we didn't have sex and just made out and all. My period is two days late, but I've been moody as shit lately, bloated and craving chocolate. Am I pregnant or just pmsing?? Help!