If this is your second, third, etc pregnancy you could feel slight movement as early as 3-4 months if you are very in tune with your body. However, I am in my first pregnancy and I felt the baby move at 18 weeks...
How Many Months Pregnant Until You Can Feel The Baby Move?
If it is your first pregnancy then you can feel the movements after 5 month of pregnancy but if its second pregnancy,then movement can be perceived a week or two earlier.