Swimwear?

I know for some people (like me) this is a touchy topic. Being a teen and being fat just doesn't but being a teen, fat, and pregnant doesn't help much at all. Before I was pregnant I was all boob and some little fat rolls for stomach and now I'm two big fat rolls and ehh a little bit less boob and I'm wondering what would be the best bathing suit for me? My sone to be mother in law is taking my finacee, me, and his step brother on a cruise at the end of March beginning of April and I really want to get a tan and go swimming and stuff so any help would be amazing.