Advice am I crazy

I got into a big fight with my husband. My husbands friend invited him to an engagement party.  He went to the party but I feel like I'm not important do to my husband because they only invited him and not me.  Their were other girls why wasn't I invited and why did my husband go knowing I wasn't invited he didn't care about my feelings being hurt. I have never done anything to his friends I really don't know them why do I feel like he doesn't care about me. I feel so hurt by him.