Trying to conceive

I’m 20. Regular periods every 28-29 days. My period went back to normal 1 month after stopping birth control. Was on birth control 3 years I’ve been off 9 months now. Started trying to conceive 2 months ago, period arrived today making 2 months trying to conceive failed. Seems like everyone gets pregnant so easily yet I’m struggling. Or at least I feel like I am. Am I infertile? What’s going on?