No pregnancy after family planning

I was on a family planning method using the injection type for four years. To my surprise, two years after stopping the injection, I am yet to get pregnant. The problem is causing tension in my marriage. Kindly help me.

Ada (by SMS)

Although some amount of delays may occur in getting pregnant after you stop using a method that has the hormones oestrogen or progestin, having to wait for as long as two years is quite worrisome. In view of this, it would be a good idea for you to see your doctor for a proper examination and laboratory tests which may include some hormonal tests.