I accidentally ran stroller into door while walking baby. bounced pretty good. could baby be hurt from this or shaken baby syndrome?

Likely fine: Shaken baby is a violent angry shaking of the baby. It is never considered accidental unless patient has a rare medical condition that makes them prone to head bleeds. In any case, the baby would not act normal because of the brain damage that it causes. Depending on where the brain damage is, it can even cause the baby to stop breathing. If you worried, have the pediatrician check the baby

Unlikely: SBS is caused when the rapid acceleration/deceleration of the head occurs during a fit of rage. The repetitive back/forth movement breaks small blood vessels in the brain triggering bleeding & local tissue damage. A single jolt by a stroller hitting a door does not replicate the force needed to injure. The brain within its cushioning surroundings would tolerate such a simple event.