Postpartum sex

So I’m 3 weeks PP and I had a second degree tear so I’m scared to death to have sex again but I want to sooo bad! I’m so horny and I know my hubby is too! He says it can wait until 6 week check up. When did you guys try and was it successful? I know everyone is different and this isn’t my first birth but it is my first vaginal birth. Help!