baby grunting while sleeping

Jessica • Married for 10 years. 1 beautiful child with Clomid + Metformin. #2 born 10/2016.... He was our surprise baby. ❤️❤️❤️❤️
Anyone else have this happen? My son grunts in his sleep from about 4-5am and it's exhausting me because I can't sleep through it. Started giving him gas drops which has helped some but last night was the worst.... any suggestions??