My LO is a little over five months old now and I have been noticing some stranger anxiety particularly with my mom. The last couple times she has visited DD has been very irratable and cranky and would cry frequently when she saw my mom. I'm wondering if this is the start of stranger anxiety? Today she is back to her usual happy self. I guess we will see how she is when she sees her other grandparents tomorrow.

When did you start seeing stranger anxiety in your LO?