How to get pregnant? we have been trying for a baby for the past 4 months,we have intercourse max of days in a month except few days.

Keep trying.: You are trying for only 4 months. About 85% of fertile couples will achieve pregnancy within 6 months of tyring and about 90% within 12 months. The success rate declines thereafter, with about 5-15% of the remaining couples concieving within the next 12 months, giving a 95% pregnancy rate after 24 months. Given your age I recommend trying for at least 6 - 12 months before becoming concern.