Exact location of baby movement

17wk+3 days.

For the first time today I am feeling something swimming and bumping from inside , but it's very light. It has been around half an hour and I can feel hiccup like sensations. But I am not sure if it is the baby or gas because I have been having gas trouble from a few days. Most movement I feel is just below the bump actually, under the pelvic/pubic bone area Sometimes it comes a little up. It is not the same place as I remember where the doctor put that ultrasound device and showed the baby. Somewhere to the left of navel. Right now Movements are felt lower or towards the right side.

Could you ladies please share where exactly did you feel the initial movement.