Need some advice. Please

Hello, my name is Hana, i'm 24 years old and marrierd since almost two years. I've been doing my master studies so i've used protection to not get pregnant. But now i'm almost finishing the studies and i want to be pregnant. I made a gynekology check and the doctor said everything ia fine, but since 5 months im trying to get pregnant (my period is regular) and i did not succeed yet. Can someone give me any tip or smth, or how long it usually takes until you get pregnant?