is it real or a coincidence?

Courtney
My son started really babbling over the last week. It started with the /b/ sound and has moved to the /m/ sound. He's progressed into saying mum mum and I'm wondering if it's possible that he's associating it with me. 
At first, I thought it was a coincidence until the last two nights he stood in his crib crying and screaming mum mum until I came in. 
Any one else experiencing this?? 
Side Note: My husband has been away on military for a little bit and he has turned into a complete momma's boy!