If you had a late walker (anytime after 13-14 months), tell me about it!! When did they take their first steps? When did they actually start walking on their own?

Our LO is 15 months, and still not walking. Her 15 month checkup with her doctor is on Friday, and I'm kind of freaking out.

(At her 12 month appointment, her doctor said something like, "If she's not walking at 15 months, then we'll have a problem!") ... Yeahhhh.