I lift my baby up often. Will this make my herniated discs worse?

Possibly. Lifting and bending can make the symptoms of disc herniation worse. Make skeep to keep back and abdominal muscles strong with daily stretching and strengthening to allow you to limit thenproblems that herniated discs can cause.
Yes. Be careful bending over the crib to lift. This will put a lot of pressure on your back. When you lift, bend at the knees. Focus on lifting with your legs, not your back.