Hi, I've Never Had A C-section Before. I'm Pregnant Again

Hi, I've never had a c-section before. I'm pregnant again after I suffered pudendal nerve damage while giving birth last year. I'm feeling much better after a nerve block, accupunture and physiotherapy. I gained a lot of weight and lost 8 kg in 3 months before becoming aware of the other pregnancy. How can I maintain healthy weight gain and also will I be able to exercise after a c-section? Regards, Tebogo