Hi mama! Honestly, withdrawal after CS is really risky kasi super fertile ka pa lalo na bagong postpartum, and maraming cases talaga ng buntis kahit ganitong method, a few of us tried na nag-backfire agad haha. Good call na gusto mo mag-injectable, that's way more reliable, but definitely check with your OB muna bago ka mag-start kasi need nila i-assess kung okay na ang CS wound mo at safe ka nang mag-inject (usually around 6 weeks postpartum is fine, pero better confirm with your doctor). Once you get the go-ahead, the injectable is solid, I've got mum friends na walang problema for years with it. Hang in there and good luck sa family planning plan mo!