Had to give my 6yo and enema :(

My son has been battling with constipation since he was born!! It'll get bad then it'll be fine and so on and so on. He eats a pretty healthy diet. Doctors hunk he is lactose intolerant but we haven't had testing. And to be honest it's been since he was about 3yo that I had to give him an enema. But I had to this morning he was up every 30 minutes through out the night crying and saying his butt and belly hurts and honestly knew he needed an enema but I can't hold him down myself so had to wait for SO to wake up. I tried to explain to him what it was and how it will help but obviously being a 6 year old he said NOPE!! But he was in so much pain it had to be done...anyways it was extremely traumatizing for all of us holding him down and doing that..can anybody relate??? I'm heart broken for my baby boy!!!