ttc troubles

My husband and I just celebrated our three year wedding anniversary. After we got married we had unprotected sex but not really trying to conceive. I had previously got pregnant at a young age but ended up terminating the pregnancy. Flash forward to now. We want a baby. I feel like everyone around me is just having babies. It has been well over a year since we have been trying to conceive a baby. I have been checked by my doctor twice that said there is not reason why I can not conceive.   I have put my husband on some vitamins and hoping that will help. Getting pretty down that everyone around me seems to have the easiest time getting pregnant. Meanwhile, month after month I am disappointed when my menstrual cycle starts. If anyone has any advice I'd love to hear it. Hope seems so far away when I just want the missing piece of the puzzle.