Would suggest you to go checkup since you have been trying for a year. I take it as you are actively trying right?
There are a lot of factors to consider...age, any health issues, whether you are having regular "activity". As our window of opportunity is rather small each month, some people take a few months to conceive, some maybe 1-2years.
And of course, most importantly is to go check first to see if any underlying problems then at least you got something concrete to work on.