Birth control options

Jennifer
Hey ladies im on nexplanon birth control and I gained like 8 pounds in 4 months of being on it and looking to get on something else I wont do IUD or pills since my doctors are stricked on Maken sure I don't get pregnant due to my heart condition that I got after I gave birth 4 months ago I want to be on something that wont cause me to gain weight I need to loose weight so I can be more comfortable about being lazy after getting my tubs done but anyways I need some ideas I got no idea when im do this surgery its up to me when im ready I ain't ready to stop haven kids I just had my second child and want one more but my doctors don't think ill be healthy if I get pregnant again cause I came down with ppcm but want to be happy with my birth control till then I want to be on seasonal pill but they wont let me on pills since they don't trust it but any ideas would be great