My husband and I have been trying since 2012 with no success of conceiving

My husband and I have been trying since 2012 with no success of conceiving. We went to a fertility specialist where I've been put on metformin and clomid to help me ovulate in august of this year and still nothing. Through prayer and these medications my husband and I are hopeful to conceive soon. It has been a rough journey for us, through tears and frustration many be times I felt like giving up. Still we press on.