Can GERD/acid reflux cause pain in upper right quadrant as well? Diagnosed with Gerd. Had gallbladder removed last year.

Not typically. GERD typically does not cause right upper quadrant pain. Depending on the nature of your systems, bile duct problems (such as a retained stone or bile duct stricture) could explain your systems. See your gastroenterologist as additional blood work and imaging tests may be necessary.
Shouldn't. Abdominal pain however is very nonspecific. If it's severe, follow-up with a primary care provider.