I'm 16 and Confused.

So basically me and my boyfriend had sex on Sunday night at a hotel party without a condom and today I was at a resteraunt with my sister and suddenly I had the urge to throw up. I've also been having rapid mood swings, weird bloating, and irritability lately. I can't tell if I missed my period since it's not November yet. I'm too scared to tell my mom what's happening. Am I probably pregnant?