Getting discouraged

We have been ttc for 3 months. I know that doesnt sound like a long time but we try when im ovulating we have sex every other day basically, we want to have kids so bad. I feel like it should have happend by now. I mean people get pregnant all the time by accident, and Im trying and ita not happening. Im so scared theres somethkng wrong with us and they just havent found it yet. 😕