I have one child who is 9 years old. we've been trying hard to have another child but nothing. what should i do thanks.

Everybody different: Everybody's situation is different, so i can't answer the direct question for you. If you have the means to seek fertility work-up and would be open to assisted conception, then go for it. Make sure you've both had a good general check-up - something as minor as a thyroid problem could be the cause.Remember you have been blessed one time already - don't forget that child in the effort for another.