just feeling emotional

Hi ladies. Just need some words of encouragement... I know it takes most couples up to a year ttc until they get pregnant. I have been tracking my cycles for months now. Using opks every cycle. Using this app. Eating the right foods. I ovulate regularly and have my period regularly. Every 28-30 days. My husband is young, 26, healthy. I myself am 25 and healthy. I just DON'T understand how or why I'm not pregnant yet!! I'm getting so frustrated and I know I shouldn't be given other people's situations. I just can't help but feel like something's wrong. Sorry to you all for complaining just needed to vent.  Rant over