I’m uneven!

NNEJ • 35 Yr old Mother of 2 girls and 2 boys 🥰💕💙

As of two days ago I noticed I was a lot more full on my right side. I hear the baby gulping when he’s nursing in that side also. My left breast is super soft and I never hear gulping from that side. I try to nurse him on that side as much as i can but he doesn’t seem to stay on it long like the right. Help?!