Baby moving?

I'm 15 weeks 1day and I swear on occasion I can feel the baby move. (I feel it on the inside if you touch my belly you definitely wouldn't feel anything). I know it's not gas. This is literally the craziest thing I've ever felt!!! I'm seriously on the verge of crying. lol. I go through phases where it feels real that I'm pregnant and others where it dosent!! I can listen to the heart beat and look at the ultra sound and feel happy and excited. But feeling this... no words can describe how I'm feeling. I can't wait for my husband to be able to feel the baby when touching my belly so that he can be part of this experience to.