sex after check up

Iliana • V•VIII•MMXVII 💙👶🏼 X•III•MMXX 💙👶🏻
So my 6 weeks check up is this coming week and be cleared! I'm scared to have sex again what if it's going to hurt so bad and I won't enjoy it anymore? Does it really hurt the first time after birth and for how long? What can I do so it won't hurt? I know I would have to use lube since I'm going to be dry due to hormones. Which is lube should I buy and why? I've never used lube in my life so I don't know how it feels or which one to get! TIA