The Depo shot is the only method that has been proven to directly cause weight BUT that doesn’t necessarily mean you will experience that as a side effect. Irregular bleeding is very common on the shot and you can only use it for 2 years as it can decrease bone density after extended use.
The IUD (there’s hormonal and non hormonal options), the patch, the ring and implant are also good options if you don’t want to take a pill everyday.
Definitely have a chat with your doctor/BC provider and see what they recommend for you.
@stinaaa I think OP wants to gain weight.