White bumpy bumps on my newborns gums blister looking... bothers her while she feeds?

Bumps. Could be enamel pearls. Could be baby teeth trying to erupt. See your Pediatrician or better still, a Pedodontist.
No worries... Epstein's pearls — These small, white, pearl-like spots appear on the roof of the mouth. These bumps are harmless and tend to disappear within a few weeks. Bohn's nodules — These small, whitish bumps or cysts look like Epstein's pearls. However, they develop on the sides of the gum ridge rather than the roof of the mouth. Inclusion cysts — These small bumps appear along the crest of the gum ridge.