I need words of encouragement.

So I'm going to college right now and I'm working on two degrees. My plans are to graduate this year with an associates in Business Administration and get accepted into the nursing program at my school in April. I'm trying to get my life together but it seems like everyone is looking down on me for going to college. All my friends are getting married and even my best friend thinks it's stupid that I'm still together with my boyfriend because he doesn't have plans at all to marry me (which could be a lie, he might just be waiting). My boyfriend changes his mind a lot and I think that we will get married down the road, just not right now since I'm 20 and he's 24. We are still pretty young I think.. I'm just so tired of everyone looking down on me.

Am I wrong for doing what I'm doing?

I want a big wedding that I can treat myself and my bridesmaids like queens and I don't think I can achieve that right now without my degree..