Cardi B feels “so happy” after sharing her pregnancy news with the world. The 31-year-old rap star – who already has Wave, two, and Kulture, six, with her estranged husband Offset – has admitted to feeling a sense of relief after revealing that she’s pregnant with her third child. Cardi – who recently filed a divorce from Offset after almost seven years of marriage – wrote on X: “I’m so happy y’all know I’m [pregnant emoji] now I can stop wearing those deum school girl skirts lmaoooooo [laughing emojis] (sic)” Cardi recently announced her pregnancy via a post on social media. The award-winning…