Giving up on trying

Well my husband and I have been trying for about a year and a half. And I'm just going to give up on it (for now). I haven't told him yet, he doesn't have any children but I have one. He went out and brought the clear blue ovulation test, macs root & preseed. Don't get me wrong, I do want more children but this is becoming stressful. Are these feelings normal? I'm just lost..........