Waking up all night grunting?

Olivia • SAHM 🤰🏽 10/17/2016 👦🏼 🤰🏽 8/31/2018 👶🏼 Carter and Leo ❤️
My 4 month old son has been waking up every 2 hours grunting and straining... I've tried bicycling his legs and gripe water before bed but I don't know what to do? It's driving me crazy!! He occasionally passes gas but doesn't poop until the morning. He's EBF, any tips?! I'm soooo tired 😴 anyone try babies magic tea or colic tablets?