Advice?

My boyfriend and I have been dating for 7 months, but have known each other all of our lives (he's 22 and I'm 19). For Christmas, I'm going out of state with my sister, so today I was making sure I had everything (clothes and money). His mom got upset because I didn't spend all day with him. And she's putting it in his head that I am going to break up with him. At this point, I'm ready to just to get away from his mom. Help!