Oo normal yan, lalo na kung first baby mo! A few of us mums didn't feel movements until 5-6 months, especially if the placenta is in front, it acts like a cushion kaya mas mahirap maramdaman. Pero para sa peace of mind, definitely mention it sa OB mo sa next check-up, kasi sila ang magkakaalam ng exact position ng baby at placenta mo. Some of my friends panicked rin pero doctor lang nagsabi na lahat normal, hehe. Marami talaga akong kilala na ganyan ang experience, so you're not alone!