Aiya, the numbness in fingers after C-section is quite common lah, a few of us mums experienced it too, usually related to nerve irritation or swelling from the surgery, and it normally gets better over time but you should definitely check with your doctor about it, especially if it's affecting your daily life. Regarding the Depo spotting, honestly that's tricky because hormonal contraceptives react differently for everyone, some mums I know said the pill helped regularize things, but others had prolonged spotting too, so best to have a proper chat with your gynae about switching methods or adjusting your current one, because 2 months of continuous spotting isn't ideal and she might suggest something that works better for your body.