Was that the baby moving?

I think I felt the baby move today. I was walking to my car after work & had lots of baby thoughts in my head about the next couple of weeks & what I was anticipating. I thought to myself, "It will be so exciting when I can feel the baby move." I sat down & my car and felt a flutter on my left side. It didn't feel like "gas", but some small movement. I felt it a few more times throughout the evening. I called my other mommy friends to ask about the first time they felt the baby move & what it felt like to them and their thoughts were in line with what I felt. I guess I won't know unless the feeling continues, but it's so exciting to think that I could already feel our little one wiggling around. The "baby books" say that you should not notice it before 16-18 weeks, but I guess everyone is different. Either way, it's all very cool to me!