Big boob problems

So lately I've been looking at bralettes and bandeau bras, and I think they're really cute, but those are only cute for girls with small boobs. I hate wearing bras and sports bras aren't to comfortable for me anymore. I like to be free but not sure how everyone else around me would feel if the nips poke through. My bf said its fine and I can wear them, but he doesn't understand the struggles of having big boobs. Trust me I'm not putting down big boobs or anything. I just much rather have smaller boobs because I'm tired of being scared of the girls. Any of you ladies have any advice or stories to share about your boob problems?