I feel movement at 11th week

I wonder if its a movement or something serious. it feels like may maliit na kalabit from I think where the baby is. hnd masakit pero every after a day may maliit na kalabit talaga sya that I can't really explain. I've searched online and sabi movements for the first time moms are likely to feel at the 18th week +++. share your thoughts ??