Maky is doing something odd when she's crawling, she will put her head down and crawl around and almost bang into walls as she cannot see where she is going in this position. She looks like a baby battering ram.. and she seems to do it when she's pissed off or over tired. The other two didn't do anything like this, so just a little concerned. Has been doing this the past couple days. Has anyone else seen their child act this way? She is working on walking..will let go..then chicken out the last second. Do you think she is frustrated?