birth control after birth

brittany • 💗7.29.16..Baby #2..9.4.18
when did everyone start their birth control after having a baby? FTM and I'm 6 weeks pp. my doctor gave my birth control which I used to take all the time. but I'm not sure if I should wait for my first real period or start taking the pill. I want to have sex so I want to start on the pill again lol