Dear Mam,
Don't worry about it. There are many factors that are responsible for it like stress level, hormonal issues, diet and lifestyle. These factors may cause barrier in conception. Counselling sessions and medication(if necessary) will be helpful to overcome.
Next Steps
I will suggest you to consult a gynecologist near you or you can call me or visit my clinic.
Health Tips
Pay attention on your health first and don't disappoint.