How hard is it seriously?!

My fiancé and I have been TTC for about 5 months now. What started as "well if it happens it happens but we aren't trying" has now turned into is buying ovulation sticks and have calendars and have done so much re search! We even looked into supplements to increase fertility! I was on my BC for about 7 years aNd I understand that has an effect on fertility. Last month I know I was fertile and that I ovulated and ya know we did the dirty (not that we don't ALL THE TIME ANYWAYS) but it's just not working! I'm just wondering has anyone else had this problem? And how long does it last:(