Yes there are things you can buy over the counter that will let you know when the best time to concieve is. First time mom's over 40 are becoming more and more common. I have two cousins that decided they wanted kids after 40. One just had a healthy baby boy and another is due in a couple of months.

Once you're able you and hubby should be checked, is there anything worse than wondering? If you know there is a problem there may be ways of increasing your chances of having a baby. Good Luck!