Usually when you are 4 months/20 weeks complete you will feel the baby movements. I felt it when i was 19 weeks pregnant.
One of my friend felt it when she was 5 months/24 weeks completed. I think it depends on person to person. As long as your regular check ups and heart beat of the baby is good, do not worry much about the delay in feeling the kicks. For the first time mothers, it's hard to distinguish between any other gas/acidic problems with that of baby movements. Only when it repeats, they will start understanding. It'll be like bubbles or butterflies inside your tummy. All the best.
