I have a 6 month old daughter, sometimes i feel she has a little squint in her right eye, is this normal in infants or shld i contact a doctor?

Possibly normal: At six month eye coordination is beginning to be stabilized but there is still some tendency to wander while good central fixation develops. If one eye is consistently out of alignment (check the red reflex on photos for one eye being consistently black), then evaluation might be in order to eliminate some structural problem.Ordinary eye alignment issues are usually handled at an older age.

See Eye MD: Any misalignment of eyes past age 6 weeks needs to be evaluated.