Feeling paranoid

I'm a FTM and I'm 17 weeks as of today. For the past week I've been feeling some cramping or little stabbing pains in my pelvic area (teensy tiny little waves of pain) but they haven't been painful enough to make me worry before.. But now after a week of it I'm starting to worry if something is wrong with the baby.. I also don't feel my belly got much bigger from last week and I felt the baby move once last week but I don't think I've felt it again since then. Am i being paranoid or should I be concerned?