He said "momma!"

My son is 17 months. He has been saying "mama" for a LONG time. Except, it was never in reference to me. Every object he doesn't know the name to was "mama" I was feeling down about it because he knows who Dada is, but if you ask who Momma is he would point to a picture. Well today I got out the vacuum in the living room while he was eating breakfast in the kitchen. He has been afraid of it but I thought it would give it a try. As soon as I plugged it in his eyes welled up with tears, he reached his arms out and said "momma!" By the time I picked him up we were both in tears. I guess he does know who I am after all.